laslow

I have a 1995 f150 5.8L 4x4. Just wondering what weight oil everybody uses.

F150s Man

I have the same engine, use 10W-30

wde3477

10W40 with a Motorcraft FL-1A filter.

J DUB

i also use 10w40

Octane

You guys would be wise to switch to 5w-30. It will perform the same as 10w-30, but you will get less engine wear at startup because 5w-30 flows up to the valvetrain quicker at startup.

wde3477

Hey - I resemble that! Nobody has ever accused me of being wise :-)

Actually for my model year, 5W30 is recommended only for temperatures 60degF and lower, 5W20 for temps 20degF and lower. 10W30 and 10W40 are recommended for temps from 0 to 100.

Who am I to go against the millions of dollars worth of Ford engineering? :-)~

thejon2524

I just use premix and run my truck like a 2 stroke

ma94xlt

I run 10/30 all year round here is GA. But for colder climates I would run the 5/30 for reasons stated above. (faster oil flow)

Good old Bill

Thejon2524, nice! To original thread starter, is the label still under the hood someplace? Best to stick with the engineers. I'm in the hot desert, 5W20 recommended for my 02, 179K on the clock, just to add mark at 5K oil change.

F150s Man

Premix? and run it like a two stroke? hahaha I Love it!!! My old truck used to "Diesel" when i shut it off.... so i figured why not put diesel in it! haha