what oil do you run
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Senior User
Joined: Jun 2006
Posts: 495
Likes: 0
From: Dora Alabama
what oil do you run
I was wondering what weight of oil you were running in your fe. I had been running 20-50 in it since it was old and dad said to run it. I am thinking thst might be a little thick. I am thinking of going with 10-40 next time
Elder User
Joined: Jul 2003
Posts: 668
Likes: 2
Please look at your oil pressure when the engine is warm with the current oil. Then switch to one of the lower viscosities and check your oil pressure again. Can you post it? (you need a guage) I can tell you my experience, but I dont want to bias you. Me and some bud's have a theory about this topic.
Tuned
Joined: Mar 2009
Posts: 360
Likes: 3
From: Napa
Yep, much more important than the difference between 20-50 and 10-40 is that you don't use the new-type low ZDDP oils with your flat-tappet cam- avoid any oil with a GF-4 rating. Valvoline VR-1 is also a good high ZDDP oil that's available at Kragen, etc.
