FE Engine Oil

[Detroit Bill]

Originally Posted by zrayr

^^^^^ this !

I use/used in all all small & big blocks. Never any oiling issues. There just isn't much of an argument for not using a quality synthetic in these vintage engines. The friction reducing properties are well known and throughly documented. Simply put, your engine will just last longer.

Z.

I believe there are several arguments. Some were mentioned in this tread already by knowledgeable engine builders.

[zrayr]

Originally Posted by Detroit Bill

I believe there are several arguments. Some were mentioned in this tread already by knowledgeable engine builders.

those arguments are likely based on outdated thinking, not on fact. The heavier synthetics such as Mobil 1 15w-50 & Mobil 1 0w-50 are very well suited for Ford FE engines & the FSB's as well.


If your FE leaks with a synthetic oil, it indicates your seals were holding deposits and need replacement. That's not the fault of the oil. In any case, such seepage usually goes away once the oil has reconditioned the seals, if not, replace the seals, not the better oil.

2 cents,

Z.

[blykins]

No sir, not outdated thinking.

And yes, Bill, regular non-synthetic VR1.