Switched over to 10W30 last night.
Thread Starter
Team Owner
Joined: Mar 2000
Posts: 83,381
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From: Boston, MA
Switched over to 10W30 last night.
I've run primarily Mobil 1 5W30 oil in my car since I got it. I've noticed that sine the rebuild that the car loses oil pressure above 5000 RPM in 1st and 2nd gear when the acceleration is very hard unless I run about 3/4 qt extra. The car never saw over 5000 before, so it was never noticed. The pressure would get down to 18psi and then jump right back up to the 50s as soon as I saw it and let off the gas.
I'm assuming the oil is just too watery and is thrown around too easily and cannot be scavanged back into the pan quick enough.
So.....
Last night I changed over to 10W30. I figured any added parasitic loss is so minimal at this stage of the game, and it probably is better for the ole 169,960 mile gal' anyways.
A few WOT blasts in 1st and 2nd up to 6000 with a 5 quart fill showed no loss of pressure anymore. We'll be sticking with this! :cheers:
I'm assuming the oil is just too watery and is thrown around too easily and cannot be scavanged back into the pan quick enough.
So.....
Last night I changed over to 10W30. I figured any added parasitic loss is so minimal at this stage of the game, and it probably is better for the ole 169,960 mile gal' anyways.
A few WOT blasts in 1st and 2nd up to 6000 with a 5 quart fill showed no loss of pressure anymore. We'll be sticking with this! :cheers:
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From: Indiana
Re: Switched over to 10W30 last night. (scorp508)
5/30 and 10/30 should be different only at the cold start condition. The 5 of course will be thinner at that time. Once up to normal temperatures, they should both be the same.
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Team Owner
Joined: Mar 2000
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From: Boston, MA
5/30 and 10/30 should be different only at the cold start condition. The 5 of course will be thinner at that time. Once up to normal temperatures, they should both be the same.
Team Owner
Joined: Apr 2001
Posts: 22,267
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From: Dallas TX
Re: Switched over to 10W30 last night. (cajun86)
Now ya need 15w50 :jester . My pressure is usually around 50psi now (any oil temp). Idle is about 25psi when hot, 45-55psi when cold. It definitely holds pressure with higher rpm's. I haven't run 5w30 in my car, ever. 10w30 in the new engine is too thin. It would only have 45-50psi as high as i revved it. That's ok according to GM, but not to me!
[Modified by Glock'94, 12:20 PM 6/20/2002]
[Modified by Glock'94, 12:20 PM 6/20/2002]
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: Switched over to 10W30 last night. (scorp508)
I too can't get into a full engine rebuild just now, so I just switched to a 10W40 blend from 5W30 full synthetic.
I'm still struggling with the smoking issue at the top end of the strip and thought it might help. I don't realy beat on it so much except at the strip so thought it would be fine for summer and stip use.
I'm still struggling with the smoking issue at the top end of the strip and thought it might help. I don't realy beat on it so much except at the strip so thought it would be fine for summer and stip use.
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Burning Brakes
Joined: Aug 2001
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From: Pa
Re: Switched over to 10W30 last night. (scorp508)
It sure would be nice if you could get a bigger oil pan on it. Even an additional quart would go a long way. Does such a thing exist that wouldn’t sit clear down to the ground?
Team Owner
Joined: Apr 2001
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From: Dallas TX
Re: Switched over to 10W30 last night. (Quasar92Blue)
It sure would be nice if you could get a bigger oil pan on it. Even an additional quart would go a long way. Does such a thing exist that wouldn’t sit clear down to the ground?
Team Owner
Joined: Apr 2001
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From: Dallas TX
Re: (scorp508)
Does such a thing exist that wouldn’t sit clear down to the ground?
They do, I wonder what sort of header clearance issues there are.
They do, I wonder what sort of header clearance issues there are.
Le Mans Master
Joined: Oct 1999
Posts: 9,713
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From: Sachse Texas
Cruise-In I Veteran
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Re: (Glock'94)
There is zero clearance issues with the Canton pan. The only issue you have is installing the pan with the motor in. It can be done, but is more tricky than installing the stock one because of the different designs in the front pan. The front of the stock pan is rounded whereas the Canton is squared off. I had to use an engine hoist and jack the engine up a litttle to get it on and off with the engine in the bay. Once the pan is one, everything has plenty of room to breathe.
I have my car on jackstands right now doing a cam swap. I will try and remember to take a picture tonight when I try and finish up the work. Should show how well it really fits.
The Canton pan is a good idea for anyone that revs their motor up. Especially for extended periods. A stock pan for extended 4000 rpm plus is just asking for a spun bearing (especially in an LT1 which are real bad for this).
I have my car on jackstands right now doing a cam swap. I will try and remember to take a picture tonight when I try and finish up the work. Should show how well it really fits.
The Canton pan is a good idea for anyone that revs their motor up. Especially for extended periods. A stock pan for extended 4000 rpm plus is just asking for a spun bearing (especially in an LT1 which are real bad for this).
Le Mans Master
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From: Sachse Texas
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Re: (Vette92)
FWIW, I run either 10w30 or 10w40 whatever I pick up that day.
I have a Melling high volume high pressure pump and my oil pressure never goes below 40 after it is fully warmed up and generally stays above 65 or pegged when at higher rpms. I would never use this pump without the Canton pan.
Chris
I have a Melling high volume high pressure pump and my oil pressure never goes below 40 after it is fully warmed up and generally stays above 65 or pegged when at higher rpms. I would never use this pump without the Canton pan.
Chris
Le Mans Master
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From: Sachse Texas
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Re: (Vette92)
Took a couple of pics tonight...
http://www.xtremecorvettes.com/image...learance_1.jpg
http://www.xtremecorvettes.com/image...learance_2.jpg
[Modified by Vette92, 3:00 AM 6/28/2002]
http://www.xtremecorvettes.com/image...learance_1.jpg
http://www.xtremecorvettes.com/image...learance_2.jpg
[Modified by Vette92, 3:00 AM 6/28/2002]
Drifting
Joined: Mar 1999
Posts: 1,250
Likes: 1
From: Greensboro NC
Re: (ski_dwn_it)
Your oil pressure problem is not a viscosity issue. You may be scavenging at high rpm or actually start sucking air . Did you correctly position the pick-up tube in the rebuild? I have also seen the pickup tube fall out of the pump if it wasn't pressed in right. It should be soldered/welded/brazed in anyway.....you have a bigger problem than oil viscosity !!
Team Owner
Joined: Apr 2001
Posts: 22,267
Likes: 3
From: Dallas TX
Re: (Vette92)
Took a couple of pics tonight...
http://www.xtremecorvettes.com/image...learance_1.jpg
http://www.xtremecorvettes.com/image...learance_2.jpg
[Modified by Vette92, 3:00 AM 6/28/2002]
http://www.xtremecorvettes.com/image...learance_1.jpg
http://www.xtremecorvettes.com/image...learance_2.jpg
[Modified by Vette92, 3:00 AM 6/28/2002]