93-97 LT1 enignes..

[tealz]

just out of curiosity.. does anyone know what oil GM used in the 93-97 F-body LT1 cars back then? I know certain vettes of that era were spec. for mobil 1, but not F-cars.

 

[moklock]

My '96 Manual just lists a 5W30 API SH oil as "preferred." 10W30 is allowed at temps above 0°F, and "if neither 5W or 10W oils are available, SAE 30 may be used at temps above 40°F."

 

[ThirdeYe]

FWIW I used to use Valvoline MaxLife 5w30 in my sister's old '94 Firebird Formula with the LT1, it seemed to like it and stopped a small leak it had.

 

[97autoz28]

My 97 Z28 manual lists 5w30 as preferred too. I think they just put plain old 5w30 in them from the factory. The vettes did have the Mobil 1 deal with them. I imagine it was more of a marketing thing than anything.

I've been trying to find a good oil for my car. I've been using German Castrol 0w30 and find my engine makes a lot more noise.
I'm changing my oil today with Pennzoil Platinum 5w30 to see how that goes. If that does not quiet it down I'm going to try some Maxlife.

 

[tealz]

so it was really no particular brand.. just whatever was cheapest at the time and met the certification requirements?

on a side note i'm gonna try valvoline maxlife 5w30 and a powerflo filter (identical to purolator) for $2!

prolly go back to 10w30 or 10w40 maxlife when it gets summer again.

 

[GMBoy]

Only the Corvette LT1's were factory filled with Mobil 1 and spec'd for GM4871. This covers the 1992 thru 1996 Corvette LT1's and the 1996 LT4's. I've used nothing but MObil 1 in my 94 Corvette LT1 with fine results.

 

[mechtech2]

http://www.corvetteactioncenter.com/tech/oil/
Take a peek here. Very corvette specific stuff.

 

[GMBoy]

Yes, that is a good article.

 

[OVERKILL]

That is an excellent article!

 

[artificialist]

Every LT1 Camaro or Firebird I worked on said 5w30, and it used the exact same oil cap found on most GM engines.