I have looked through the various search functions and still have not come up with the answer to my questions, only variables thereof. I just purchased an 05 F150 Screw with 5.4 engine 4wd & 3.73 gears and am planning on running synthetic in it. I realize that at only 400 miles I am aways from my first oil change but wanted to get suggestions as to what oil I should use and what weight?

I live in Illinois so we have winters that will be down to a low of 0 but usually in the teens to twenties. The summers will run in the upper 80's to 90's. So, we are not Texas but we are also not Montana. I am using this mainly as a commuter and towing a trailer only on occassion (16 foot tandem but only loaded with a 4 wheeler or similar weight) so not much weight at all and even then it's would only be about 50 miles round trip once a month. Suggestions?

Also, unless someone can direct me to a better alternative, I had planned on keeping my air filter stock. Should I change this out to K&N or? Thanks!

Griz

 

the stock air filter is a good idea. to the oil question. unless you see subzero temps a syntheic oil will not help you in any way. syntheic oils do not provide you with longer engine life. so the Motorcraft 5w20 semi synthetic oil is great for your truck year round.

 

I agree with everything he said!!!!!!!!!!!!!!

 

I run the motorcraft and it works well, they can't void your warantee for using that and a motorcraft filter either, I'd stick with the stock or maybe a wix but don't ever use an oiled filter it will wreck your motor

 

i also agree with stock air filter and motorcraft 5w20 or equal oil. to be honest i've never be to crazy on the synthic oil, but thats just my .02