Should I use it in my 99 Trans AM? I did on my last oil change and it is due for one this week, before my next AutoX competition....What do you guys use? I am in Florida by the way, so it is f'in hot and humid all the time.

 

I have been runnin it for about a year now and no problems. Oil pressure is up there tho.


PM Patman..........Oil guru.




Stu

 

It's too thick, you're robbing yourself of about 5-10hp with no benefits whatsoever. Don't go any higher than 10w40 in these motors.

 

I only use castrol gtx 20-50! in all of my race engines and daily driven vehicles!

 

Some of us do 4 quarts 10w30, 2 quarts 15w50 to get the desired 10w40.

 

I run 15W-50 in my 427 stroker, is that fine Patman?

 

I'm using 10W40 but I am thinking of going to 20W50 for the hot season.

 

I just bought 6 quarts of Mobil 1 10w30 today. Cost me about 30 bucks and bought a Pure 1 filter to go with it. Previously I had 5w30 in it, but since the summers up here can get to about 100 or higher, I switched. I saw the 15w40 there but I think the 10w30 will do fine.

Rob

 

Thanks for the input

 

It depends on if the clearances in the engine were bigger. IIRC, Tony used to just run 10w30 in that engine.