[GeaTea]

even though on the cap and the manual say to use 5W-20 ??

I wanna use 20w-50 because it's the best for the climate conditions in my place.

thxs

[racin366]

NO, that's too heavy for the small oil passages in the engine, it'll do more harm than good. Go with 5w20 synthetic and a good filter. If you absolutely want to use a heavier oil maybe 5w30, but the stock weight is best, I live in south florida and its not quite as hot as where you are, but its close and that weight works great. Synthetics have a larger usable range than conventional, last longer, lubricate better, basically they do everything much much better. But like I said, the modular engine has small oil galleys and heavy oil can cause the top end to starve, not to mention the bearing in the bottom, these engines are built to much better tolerances than older ones, so it's best not to mess with oil weights.

[martial mustang]

Some will say use 5w20, but 5w30 will provide better protection for your engine. I wouldn't try the 20w50.

[GeaTea]

nice informative answers in less than 10 mins

ill use 5w-30 with a new oil filter from the ford dealer

thx all

[2oo5GT]

+1, with SOHC the oil needs to pump up there to lube the cams and with that thick of oil, it would take to long to get up there in the small passages.

[04KenneBellGT]

The owners manual says stick with 5w-20, which is what I use.

[cement guy]

5w20 synthetic all the way