Used Oil Analysis of many Fords using 5W20 show great results - indicating this oil is and will protect the engine for many miles. There is no reason to use a heavier oil in this engine.

 

I use RP 5W30 because that is what my local auto parts store carries. I don't think anyone would ever notice a difference between 5W20 and 5W30........so go with what you can find locally.

 

I read somewhere that the auto companies get charged a few bucks for every .1 mpg that they go over a certain government standard. That could add up to be a great deal of money! I don't seen an issue with 5W-30. If you run in a colder climate, maybe the 5W-20 is the best choice..otherwise, 5W-30 should be ok.

 

I'm sticking with 5w20

 

Same here and BTW Don't use SM oil Use SL oil

 

We have 0w20 at our dealership!!! (VW)

 

where are you the artic circle

 

"By the way, if a ford service department is telling you to put in something different, i would get it in writting, from what i understand if you dont use the 5w20 and and something happens to your engine, well they can refuse warrenty work."

Absolutely! +1!

My brother was having problems with the front axle seals on his GMC 4X4. GM accused him of using gear lube that was not specified in the owner's manual, and actually sent a sample to a lab to have it tested. It was the correct lube and GM did honor the warranty. If GM is capable of getting that nit-picky on a technicality, you better believe Ford will if it is in their best interest. Just something to keep in mind...

Mike

 

What oil you use isn't as important as how often you change it. Today, all the name brand oils are good. Pick a good oil, stay with it and CHANGE IT.

 

ya but if you put an aftermarket cam in and use SM oil bye-bye cam