oil temp to high?
Thread Starter
Instructor
Joined: Jan 2011
Posts: 114
Likes: 0
From: tucson az
oil temp to high?
I have a question my car has been running around 190-220 depending on conditions of driving or how far i drive. 224 is the highest it is ever gotten by me just letting car sit there running for half hour to see how hot it would get! I do have the 2006 A6 Z51 and i thought that Z51's came with an external oil pump or is it built into the radiator? If i do have a built in oil cooler what are my best options for upgrading it or adding an external one? I would also like to upgrade the tranny cooler at same time if i can? could i just get one of those expensive 1k+ radiators that have all those connections for the coolers? Are the coolers attached to aftermarket radiator like ron davis or dewitts one a good enough upgrade?
where do i look? what brands? options?
where do i look? what brands? options?
Thread Starter
Instructor
Joined: Jan 2011
Posts: 114
Likes: 0
From: tucson az
water never goes over 190 in driving or racing but i have edelbrock high flow wp and 160 stat. well i was getting ready to install a ss3600 converter and was told to upgrade the tranny cooler. I was also planning on doing a 100-150 shot of nitrous so i thought that i would need it to better cool the car because of the extra stress and power! I thought 220+ was hot because that's what is what it was at when in heavy traffic! At what temps should i start worrying about the oil,tranny,and water?
Safety Car
Joined: Feb 2002
Posts: 3,726
Likes: 368
From: Montoursville Pa
water never goes over 190 in driving or racing but i have edelbrock high flow wp and 160 stat. well i was getting ready to install a ss3600 converter and was told to upgrade the tranny cooler. I was also planning on doing a 100-150 shot of nitrous so i thought that i would need it to better cool the car because of the extra stress and power! I thought 220+ was hot because that's what is what it was at when in heavy traffic! At what temps should i start worrying about the oil,tranny,and water?
Engine oil under 270
Trans 50-70 under coolant
these are max temps on track
I'd like coolant under 210
oil 220
trans 100-150
Melting Slicks
Joined: Apr 2007
Posts: 3,290
Likes: 0
From: Willow Springs IL
Oil temps of 280 - 290 degrees during a lot of high RPM driving is normal. I would start to worry if you ever get it above 300. Mobil 1 they claim can handle temps of 400 degrees. You have nothing to worry about.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
The mods you are thinking of will not stress the engine oil temp much. High oil temps come from lots of time at high rpms and lots of wide open throttle operation. Drag racing does neither. Oil temp will barely blip in the few seconds it takes to run a drag race. On the track I typically see 258 to 260 oil temps with my C6Z after running at near max manifold pressure for 20 or 30 minutes.
Bill
Bill
Melting Slicks
Joined: Oct 2010
Posts: 2,314
Likes: 4
From: Cape May, NJ; Guntersville, AL; Orange Beach, AL
The mods you are thinking of will not stress the engine oil temp much. High oil temps come from lots of time at high rpms and lots of wide open throttle operation. Drag racing does neither. Oil temp will barely blip in the few seconds it takes to run a drag race. On the track I typically see 258 to 260 oil temps with my C6Z after running at near max manifold pressure for 20 or 30 minutes.
Bill
Bill
Melting Slicks
Joined: Mar 2007
Posts: 2,391
Likes: 23
From: Santa Barbara CA
[QUOTE=Mattraffai;1577176396] I do have the 2006 A6 Z51 and i thought that Z51's came with an external oil pump or is it built into the radiator?
[QUOTE]
To answer your question....... no, you don't have any engine oil cooler. The automatic Z51 cars didn't come with one. I'm not even sure if the manual Z51s had one in 2006. I know the 2005 Z51/manuals had one built into the radiator. The 2008+ Z51/manuals have an external air to oil cooler.
The cheapest solution would be to buy a 2008+ Z51 external cooler and lines. Or you could maybe find a used factory radiator with the oil and trans coolers from a 2005 Z51. I went with a DeWitt's that has both coolers built in because I don't have room for my external Z51 cooler anymore. I have a big intercooler taking up that space now
[QUOTE]
To answer your question....... no, you don't have any engine oil cooler. The automatic Z51 cars didn't come with one. I'm not even sure if the manual Z51s had one in 2006. I know the 2005 Z51/manuals had one built into the radiator. The 2008+ Z51/manuals have an external air to oil cooler.
The cheapest solution would be to buy a 2008+ Z51 external cooler and lines. Or you could maybe find a used factory radiator with the oil and trans coolers from a 2005 Z51. I went with a DeWitt's that has both coolers built in because I don't have room for my external Z51 cooler anymore. I have a big intercooler taking up that space now
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Thread Starter
Instructor
Joined: Jan 2011
Posts: 114
Likes: 0
From: tucson az
[QUOTE=Streetk14;1577181053][QUOTE=Mattraffai;1577176396] I do have the 2006 A6 Z51 and i thought that Z51's came with an external oil pump or is it built into the radiator?
To answer your question....... no, you don't have any engine oil cooler. The automatic Z51 cars didn't come with one. I'm not even sure if the manual Z51s had one in 2006. I know the 2005 Z51/manuals had one built into the radiator. The 2008+ Z51/manuals have an external air to oil cooler.
The cheapest solution would be to buy a 2008+ Z51 external cooler and lines. Or you could maybe find a used factory radiator with the oil and trans coolers from a 2005 Z51. I went with a DeWitt's that has both coolers built in because I don't have room for my external Z51 cooler anymore. I have a big intercooler taking up that space now
what external cooler is there then? because there is definately see a external cooler there but i cant tell what it is going to! power steering?
To answer your question....... no, you don't have any engine oil cooler. The automatic Z51 cars didn't come with one. I'm not even sure if the manual Z51s had one in 2006. I know the 2005 Z51/manuals had one built into the radiator. The 2008+ Z51/manuals have an external air to oil cooler.
The cheapest solution would be to buy a 2008+ Z51 external cooler and lines. Or you could maybe find a used factory radiator with the oil and trans coolers from a 2005 Z51. I went with a DeWitt's that has both coolers built in because I don't have room for my external Z51 cooler anymore. I have a big intercooler taking up that space now
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
[quote=Mattraffai;1577183069][quote=Streetk14;1577181053]
The power steering cooler is just in front of the engine down by the steering rack. You can see it with the hood open. It is that finned assembly.
Bill
Bill
Racer
Joined: Mar 2001
Posts: 391
Likes: 0
From: Costa Mesa CA
As long as you are under 300 on the oil your are fine. I was running over 300 in C5 Z06 so I put in a Ron Davis radiator with built in oil cooler (water to oil cooler) now it runs at 240-250 on the track on hot days.
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
I think you are fine. You want the oil temp to get above 212 so it will boil out any condensation.
I have never seem my oil temp get over 280, and for synthetic oil, that is not excessive.
I have never seem my oil temp get over 280, and for synthetic oil, that is not excessive.
Pro
Joined: Nov 2007
Posts: 547
Likes: 3
From: Silicon Valley California
St. Jude Donor '09-'11
The temps in question 190-220 are not high, and if that's all you're getting, you do not need any additional cooling.
I've hit 270 on long mountain runs on hot days, and even 240 on cold winter days, and these temps aren't a problem. I do not have the Z51 cooler, and basically don't need it since I only reach this high a couple times a year. Since I do a lot of short trip driving in town, an oil cooler would make it that much longer to warm up the oil (particularly in winter) hence I really don't want one.
I've hit 270 on long mountain runs on hot days, and even 240 on cold winter days, and these temps aren't a problem. I do not have the Z51 cooler, and basically don't need it since I only reach this high a couple times a year. Since I do a lot of short trip driving in town, an oil cooler would make it that much longer to warm up the oil (particularly in winter) hence I really don't want one.
Former Vendor
Joined: Apr 2006
Posts: 2,470
Likes: 2
From: Portland OR
St. Jude Donor '10-'11-'12
I have one as well, the radiator offers 20% better cooling than stock as well so your gaining benefit in more than one area...
I never see coolant temps over 180 for very long at all.. I hit 190 and it drops right back down to a constant 180 no matter what abuse I am giving it.
Burning Brakes
Joined: Oct 2009
Posts: 1,004
Likes: 68
From: Cincinnati OH
I have the stock converter, but am running an rpm 3.42 rear diff and A&A SC. I only recently started paying close attn to the temps after the SC install, so I'm not sure exactly what the temps were prior to having this done.
Safety Car
Joined: Feb 2002
Posts: 3,726
Likes: 368
From: Montoursville Pa
I would add a transmission cooler inline after the stock cooler. I have been told that there is no such thing as too cool for an automatic.
I put in the largest that Autozone had about $50.
with a super charger you can put a lot more power through a transmission thats why it would be a bit hotter.
also the stock cooler is in the cold side of the radiator and will not cool lower than the outlet temp of the coolant
I put in the largest that Autozone had about $50.
with a super charger you can put a lot more power through a transmission thats why it would be a bit hotter.
also the stock cooler is in the cold side of the radiator and will not cool lower than the outlet temp of the coolant
Speedy
Joined: Mar 2007
Posts: 6,110
Likes: 931
From: Tn
2024 C8 of the Year Finalist - Modified
Hi guys, I have a supercharger, dewitts and EOC, 160* stat and am still seeing 190*coolant and 220* oil with only 40* ambient. Would it be beneficial to drill holes into my thermo? The car is not driven in winter. I plan to do some road racing this summer and need to get my temps under control quick.