Change Oil After Racing ?????
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Team Owner
Joined: May 2004
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From: SoCal
Change Oil After Racing ?????
I use Mobile 5-30.
At track events (Road Racing/HPDE) my oil temp gets up in the 280-290 degree range. This is for approximately 2 hours per event. My OIL LIFE read 91% remaining after a few hundred DD miles and last track day.
Can I go by the OIL LIFE or should I change the oil after every event because of the extreme temps. I change my oil every 4K miles now.
DH
At track events (Road Racing/HPDE) my oil temp gets up in the 280-290 degree range. This is for approximately 2 hours per event. My OIL LIFE read 91% remaining after a few hundred DD miles and last track day.
Can I go by the OIL LIFE or should I change the oil after every event because of the extreme temps. I change my oil every 4K miles now.
DH
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Send a sample to be anyalised then you will know for sure. I went 1500 track only miles and was told to go 2500 before changing. I run real hard but after the coolers I don't see over 240. Mobil 1 10W30. Blackstone Labs is great. Oil monitor takes temps, rpm, and mileage into considerations. If your guessing dump at 40-50% life remaining.
Last edited by John Shiels; Feb 4, 2006 at 09:02 PM.
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From: SoCal
Originally Posted by John Shiels
Send a sample to be anyalised then you will know for sure. I went 1500 track only miles and was told to go 2500 before changing. I run real hard but after the coolers I don't see over 240. Mobil 1 10W30. Blackstone Labs is great. Oil monitor takes temps, rpm, and mileage into considerations. If your guessing dump at 40-50% life remaining.
99% of the miles are easy Fwy DD miles. Normal oil temp is 205. I am leary of the oil coolers because of my aready normaly low temps.
I am planning to do one day of track each month.
Do you know how much the analyses coasts ??
DH
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25 bucks +- well worth it. http://www.blackstone-labs.com/ They send you a container and it's two bucks to mail back. They will do it in a week and email it to you.
Told me to extend my Dodge diesel to 8500 and cut my Ford diesel to 5000 between oil changes. I was doing 7500 on both.
Told me to extend my Dodge diesel to 8500 and cut my Ford diesel to 5000 between oil changes. I was doing 7500 on both.
Last edited by John Shiels; Feb 4, 2006 at 09:13 PM.
Race Director
Joined: May 2001
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From: Guelph, Ontario
If you are going to do this on a regular basis, you need to get an oil cooler, or switch to something thicker like 5w40 or 10w40.
Mobil 1 5w30 is already on the thin side of the 30wt range, and when you get it up to 280-290 degree temps, it is going to be too thin to properly protect your engine.
Mobil 1 5w30 is already on the thin side of the 30wt range, and when you get it up to 280-290 degree temps, it is going to be too thin to properly protect your engine.
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From: Raleigh / Rolesville NC
Howie
280-290 is tooo high for track day oil temps. You need coolers especially if you planning on one weekend a month on the track
the M1 extended mobilty oils will seem to go longer. but is that a good idea?? Get your oil tested do a seach and find a oil test company near you and use Blackstone too.
oil temps on track event the hottest days 240-260.
5-w30 is way to thin for track days. at least a 40 weight oil.
I use to use M1 15-w50 and loved it. Then they reforumulated it to an extended milage oil. Forget it. took much longer to warm up, not that 50w warms up fast, and car ran 12-15* hotter with the extended M1 formulation.
use 0-w40 M1 now ( waiting for analyses to come back) Car warms up quickly and oil temps stay 250-260* range.
when I change my oil I reset the DIC to 100%. after one hard weekend the DIC is down to 70-72% - after the second weekend it is down to 30-35% , time to change oil.
I think the DIC oil montor is good down to 32-30% but not less.
280-290 is tooo high for track day oil temps. You need coolers especially if you planning on one weekend a month on the track
the M1 extended mobilty oils will seem to go longer. but is that a good idea?? Get your oil tested do a seach and find a oil test company near you and use Blackstone too.
oil temps on track event the hottest days 240-260.
5-w30 is way to thin for track days. at least a 40 weight oil.
I use to use M1 15-w50 and loved it. Then they reforumulated it to an extended milage oil. Forget it. took much longer to warm up, not that 50w warms up fast, and car ran 12-15* hotter with the extended M1 formulation.
use 0-w40 M1 now ( waiting for analyses to come back) Car warms up quickly and oil temps stay 250-260* range.
when I change my oil I reset the DIC to 100%. after one hard weekend the DIC is down to 70-72% - after the second weekend it is down to 30-35% , time to change oil.
I think the DIC oil montor is good down to 32-30% but not less.
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Originally Posted by AU N EGL
Howie
280-290 is tooo high for track day oil temps. You need coolers especially if you planning on one weekend a month on the track
the M1 extended mobilty oils will seem to go longer. but is that a good idea?? Get your oil tested do a seach and find a oil test company near you and use Blackstone too.
oil temps on track event the hottest days 240-260.
5-w30 is way to thin for track days. at least a 40 weight oil.
I use to use M1 15-w50 and loved it. Then they reforumulated it to an extended milage oil. Forget it. took much longer to warm up, not that 50w warms up fast, and car ran 12-15* hotter with the extended M1 formulation.
use 0-w40 M1 now ( waiting for analyses to come back) Car warms up quickly and oil temps stay 250-260* range.
when I change my oil I reset the DIC to 100%. after one hard weekend the DIC is down to 70-72% - after the second weekend it is down to 30-35% , time to change oil.
I think the DIC oil montor is good down to 32-30% but not less.
280-290 is tooo high for track day oil temps. You need coolers especially if you planning on one weekend a month on the track
the M1 extended mobilty oils will seem to go longer. but is that a good idea?? Get your oil tested do a seach and find a oil test company near you and use Blackstone too.
oil temps on track event the hottest days 240-260.
5-w30 is way to thin for track days. at least a 40 weight oil.
I use to use M1 15-w50 and loved it. Then they reforumulated it to an extended milage oil. Forget it. took much longer to warm up, not that 50w warms up fast, and car ran 12-15* hotter with the extended M1 formulation.
use 0-w40 M1 now ( waiting for analyses to come back) Car warms up quickly and oil temps stay 250-260* range.
when I change my oil I reset the DIC to 100%. after one hard weekend the DIC is down to 70-72% - after the second weekend it is down to 30-35% , time to change oil.
I think the DIC oil montor is good down to 32-30% but not less.
Tom your DIC is dropping way faster than mine.
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From: Guelph, Ontario
Originally Posted by AU N EGL
I think the DIC oil montor is good down to 32-30% but not less.
Oil analysis results have proven this.
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From: Raleigh / Rolesville NC
Originally Posted by John Shiels
Tom your DIC is dropping way faster than mine.
things look fine, But we will see. Some time this year I may do a cam and heads, timing chain, ported oil pump, yatta yatta. At that time wil can do a good visual too.
Or just may get a Ketech 402 or 427 short block, and build from there. We will see.
Yes I have heard many many stories that the DIC oil monitor is good down to 0%, and one popular oil testing place says it is correct and others I have used say it isn't. So I will just keep changing the oil every two weekends.
Last edited by AU N EGL; Feb 5, 2006 at 10:11 AM.
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From: Austin TX
How much oil pressure are you seeing at 290 with 5W30?
I would run M1 5W40 on the street and M1 15W50 at the track with the coolers. At the track without the coolers at 290, I would run the most bad *** 20W50 that you can find. Red Line, Amsoil or RP Racing Formula are some that come to mind. Please post the results if you do an oil analysis on the 5W30.
A 50 weight oil at 280-290 may be thinner than M1 5W30 is at 205. Patman may be able to verify this.
I would run M1 5W40 on the street and M1 15W50 at the track with the coolers. At the track without the coolers at 290, I would run the most bad *** 20W50 that you can find. Red Line, Amsoil or RP Racing Formula are some that come to mind. Please post the results if you do an oil analysis on the 5W30.
A 50 weight oil at 280-290 may be thinner than M1 5W30 is at 205. Patman may be able to verify this.
Thread Starter
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From: SoCal
Well guys you got me worried.....I think 
I am running ONE single day event (2-2.5 hours) about every 4-5 weeks. I already change my oil about every 7-8 weeks.
I am trying NOT to get an oil cooler.
I am trying not to have to change the oil after every track day.
If I run 5-40, 10-40 or 0-40 all the time (don't forget this is a DD gettting at least 400 miles a week in southern california) do you really think I am going to burn up my engine?? BTW it doesn't burn any oil!!
Which of the above oils would be best??????
If I do have to go engine cooler....how much am I looking at. I already have a tranny cooler in front of the condenser which works very good on my A4.
Thanks for all the help and advise
DH
I am running ONE single day event (2-2.5 hours) about every 4-5 weeks. I already change my oil about every 7-8 weeks.
I am trying NOT to get an oil cooler.
I am trying not to have to change the oil after every track day.
If I run 5-40, 10-40 or 0-40 all the time (don't forget this is a DD gettting at least 400 miles a week in southern california) do you really think I am going to burn up my engine?? BTW it doesn't burn any oil!!
Which of the above oils would be best??????
If I do have to go engine cooler....how much am I looking at. I already have a tranny cooler in front of the condenser which works very good on my A4.
Thanks for all the help and advise
DH
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From: King George VA
I'm with Patman and AU N EGL with regard to viscosity - I personally wouldn't run anything less than a 40 weight on the track given the high oil temps. I personally run the AMSOIL Series 2000 20w50 even though my car has an oil cooler.
As for oil change intervals, I am still a little leary and change my oil about every fourth SCCA track day, which comes out to something like only 500 miles. I change my tranny and diff fluid about double that interval. Overkill? Probably. But engines aren't cheap.
I guess I ought to start doing some used oil analysis on my own car.
As for oil change intervals, I am still a little leary and change my oil about every fourth SCCA track day, which comes out to something like only 500 miles. I change my tranny and diff fluid about double that interval. Overkill? Probably. But engines aren't cheap.
I guess I ought to start doing some used oil analysis on my own car.
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From: Hot Springs AR
DH,
Something seems goofy. I'll pull at least 10% out of my oil life during a day at the autocross, with an oil cooler and temperatures 30 degrees lower than ours. That's 8 runs of 1-2 minutes each, plus travel to and from.
In any case, I ran my last oil change down to 0% remaining, got it analyzed by Blackstone, and it came back looking good with another 10-15% life left in the oil.
Could you be accidentally resetting the OLM? Remember that if you depress the throttle fully 3 times with the key on it'll reset to 100%.
HTH, and have a good one,
Mike
Something seems goofy. I'll pull at least 10% out of my oil life during a day at the autocross, with an oil cooler and temperatures 30 degrees lower than ours. That's 8 runs of 1-2 minutes each, plus travel to and from.
In any case, I ran my last oil change down to 0% remaining, got it analyzed by Blackstone, and it came back looking good with another 10-15% life left in the oil.
Could you be accidentally resetting the OLM? Remember that if you depress the throttle fully 3 times with the key on it'll reset to 100%.
HTH, and have a good one,
Mike
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From: SoCal
Originally Posted by Subdriver
I'm with Patman and AU N EGL with regard to viscosity - I personally wouldn't run anything less than a 40 weight on the track given the high oil temps. I personally run the AMSOIL Series 2000 20w50 even though my car has an oil cooler.
As for oil change intervals, I am still a little leary and change my oil about every fourth SCCA track day, which comes out to something like only 500 miles. I change my tranny and diff fluid about double that interval. Overkill? Probably. But engines aren't cheap.
I guess I ought to start doing some used oil analysis on my own car.
As for oil change intervals, I am still a little leary and change my oil about every fourth SCCA track day, which comes out to something like only 500 miles. I change my tranny and diff fluid about double that interval. Overkill? Probably. But engines aren't cheap.
I guess I ought to start doing some used oil analysis on my own car.
DH
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From: Raleigh / Rolesville NC
So Cal is warm enough to run a 40wt all the time. Just give yourself a little time to let the car warm up. dont start it and drive it.
Change the oil before going to the track, not after you get back. If you doing one track day at a time and DD inbetween, I would geuss you could do 3 or 4 track days PLUS the DD. SO that would be what 3 - 4 months??
When you are ON the track and you see oil temps above 260-265* , time to back down and let the engine cool down to 240-250*.
Yes oil can take 300*+ but the engine internals can not.
Change the oil before going to the track, not after you get back. If you doing one track day at a time and DD inbetween, I would geuss you could do 3 or 4 track days PLUS the DD. SO that would be what 3 - 4 months??
When you are ON the track and you see oil temps above 260-265* , time to back down and let the engine cool down to 240-250*.
Yes oil can take 300*+ but the engine internals can not.
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From: King George VA
Originally Posted by Wicked Weasel
Is there any problems with switching back and forth between M1 and Amsoil?
Basically I would run the 5w30 for non track days and the Amsoil 20w50 for track days.
Basically I would run the 5w30 for non track days and the Amsoil 20w50 for track days.
Be careful with the 20w50 when cold as it is very thick. I literally let my car idle 10-15 minutes before going out on the track, then take it easy for the first lap until the oil is well warmed up.
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From: NJ
St. Jude Donor '05-'08
Originally Posted by Subdriver
No problems to switch back and forth. Both AMSOIL and Mobil 1 use PAO basestocks.
Be careful with the 20w50 when cold as it is very thick. I literally let my car idle 10-15 minutes before going out on the track, then take it easy for the first lap until the oil is well warmed up.
Be careful with the 20w50 when cold as it is very thick. I literally let my car idle 10-15 minutes before going out on the track, then take it easy for the first lap until the oil is well warmed up.
thanks - I was thinking of switching over to it during the summer months. I will use the M1 5W30 for Limerock in March when it will be cold.
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From: SoCal
Originally Posted by VetteDrmr
DH,
Something seems goofy. I'll pull at least 10% out of my oil life during a day at the autocross, with an oil cooler and temperatures 30 degrees lower than ours. That's 8 runs of 1-2 minutes each, plus travel to and from.
In any case, I ran my last oil change down to 0% remaining, got it analyzed by Blackstone, and it came back looking good with another 10-15% life left in the oil.
Could you be accidentally resetting the OLM? Remember that if you depress the throttle fully 3 times with the key on it'll reset to 100%.
HTH, and have a good one,
Mike
Something seems goofy. I'll pull at least 10% out of my oil life during a day at the autocross, with an oil cooler and temperatures 30 degrees lower than ours. That's 8 runs of 1-2 minutes each, plus travel to and from.
In any case, I ran my last oil change down to 0% remaining, got it analyzed by Blackstone, and it came back looking good with another 10-15% life left in the oil.
Could you be accidentally resetting the OLM? Remember that if you depress the throttle fully 3 times with the key on it'll reset to 100%.
HTH, and have a good one,
Mike
That one track day got the OLM down 8-9%
DH
Thread Starter
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From: SoCal
Originally Posted by AU N EGL
So Cal is warm enough to run a 40wt all the time. Just give yourself a little time to let the car warm up. dont start it and drive it.
Change the oil before going to the track, not after you get back. If you doing one track day at a time and DD inbetween, I would geuss you could do 3 or 4 track days PLUS the DD. SO that would be what 3 - 4 months??
When you are ON the track and you see oil temps above 260-265* , time to back down and let the engine cool down to 240-250*.
Yes oil can take 300*+ but the engine internals can not.
Change the oil before going to the track, not after you get back. If you doing one track day at a time and DD inbetween, I would geuss you could do 3 or 4 track days PLUS the DD. SO that would be what 3 - 4 months??
When you are ON the track and you see oil temps above 260-265* , time to back down and let the engine cool down to 240-250*.
Yes oil can take 300*+ but the engine internals can not.
I will only be doing 2 track days at most before oil changes. But not necessarily before the track day...depends on timing.
I will definately take your advise about the 40 oil. Should I go 0,5,10-40?????
I have never gotten an oil temp warning on the track. And SLOWING DOWN is not an option. That why I'm trying to figure out what I should do........
Thanks again for all the advise!!!
DH