I was browsing through the threads a few months ago and i remember something about using diesel oil in the FE engines? I am posting this topic because i can't find where the thread is. Any suggestions as to what weight to use ? 15w40?
Any help would be great. even if you can find that old thread so i don't eat up space on the forum!

1975 ford f350 dually "The 75"

 

15X40 is good , you might check the FE forum as 360s are FE engines , and I think using up space helping each other out is a good thing and one of the reasons this site is here,bob

 

I would stay away from the Diesel oil... Run what oil is appropriate for your climate, nothing special needed. I run 10-30 in my older vehicles (pre-90) and the recommended mfg weight in the newer ones (generally 5-30).

--Mike

 

Yep, 10-30 is good 15-40 is a little thick in the cold.

 

I run Shell-Rotella 15w40 in my 300L6. The diesel oil has more anti-wear additives in it.

 

I run Royal purple synthetic 10w30 usually, just dont break a engine in on synthetic ..

 

I run 10w40 summer and 10w30 winter

 

I run 5w30 in winter and 10w40 in summer.

 

I run straight 30 Valvoline in my 390 in the summer and 10w30 in winter.

 

10w30. My preference is the Connoco/Philips family consisting of Motorcraft,Kendall,Phillips,etc.

 

Huh??

Actually, diesel-grade oil would be a great choice for you, with a much better additive package, especially for an older vehicle. It is available in 10W-30. I use Mystic JT-8 Super Heavy Duty, but there are others that are good as well - Rotella T, Delo 400 to name a couple.

 

I vote for the 15-40W family of diesel oils. Delo 400 or Rotella are excellent choices. You might pay a penalty in milage(theoretically) with the thicker base weight 15, but the diesel family offers a superior additive package.

 

I use the Mystik 10w30 mentioned above in my high performance 390. It does work good. Had the heads and intake off a couple months ago, and got to look at the cam. It broke in correctly.

I used the same oil in the old 360 I took out. Everything was nice and clean when I took it apart.

 

what should i use in my fe 360 with a slight knock? Its a tired engine

 

If you live in a warmer climate with mild winters I'd be inclined to run a 15w40 Rotella or Chevron Delo diesel oil. You should be able to find either at Walmart or any decent auto parts store.