Engine Oil

[jtubbs]

This has probably been talked to death.

I have an early 302 putting out nearly 400. With the extra capacity pan, dual filters and oil cooler, its just over 9 quarts. I would like to go to synthetic, but am concerned about the viscosity. AND being an old Ford not used, the leaking problem.

Thanks

[tnc110]

Unless it was run with synthetic from day one, i would stick with conventional.

[RET_COP]

I've used both many times and never had a leak with synthetic. I'm back to regular HR-5 Driven. I like the cling to metal parts in storage it has as well as it's package.

[Dwight]

I had a '90 model 5.0 (302) making over 300 hp & tq to the rear wheels. Drove 1500 miles and changed to synthetic (Mobil One). It did not leak nor could I see it burning oil but it used qt to qt half per 1000. I changed back to dinosaur oil.

My rule is; if the motor was build by the manufacture to use synthetic oil, then use synthetic oil. If not, use the oil the motor was designed to use.

Dwight

[Dwight]

https://bobistheoilguy.com/

[G-Pete]

Originally Posted by jtubbs

I would like to go to synthetic

Why?