When I first purchased my truck, the first thing I did was change the oil to M1. Since my local parts store didn't carry the 0w20 (and I hadn't found this site and didn't know to look for 0w20), I put in 5w30. It was fine, and the truck seemed to like it. I did have some engine noise. I changed the last night and went to the M1 0w20. What a difference! All the little engine noises I had are gone. It definitely likes the 0w20 better than the 5w30.

Also, M1 was the only oil that states on the bottle their 0w20 is a replacement for the 5w20 spec oils, and they specifically state that they meet Ford's spec. There were a couple other 0w20 oils there, and none stated that they were OK for use in a 5w20 spec engine.

 

FYI -- Mobil has recently announced that they are coming out with a true 5W-20 version of Mobil 1. You might want to look for it the next time you chnage your oil!

 

I've used Motorcraft 5 w 30 full syn.in my 2003 Ranger and 2002 XTR with no problems at all.When my 2004 FX4 goes for it's first oil change she'll get the same.I did use Mobil1 5 w 20 tri-syn. in my 2000 F150 but on really cold mornings -35 c the motor had a noticeable tick.

 

I use Amsoil 0W30 that can be used for requirements from 5W20 to 10W30, and it says right on the bottle that you don't need to change it for 35,000 MILES !!!! and 0 internal engine wear.

 

FYI -- Mobil has recently announced that they are coming out with a true 5W-20 version of Mobil 1. You might want to look for it the next time you chnage your oil! Dear ddellwo DUH! Mobil 1 HAD a 5W20 out for years, even Wal Mart Sells it.

 

Mobil 1 has had 0w-20 for two years. The new product is 5w-20 and you won't find it there today, but will be on Wal Mart shelves soon.

 

Moto - yeah, we have all heard the marketing hype for Amsoil. No need to keep spouting it here.

ddellwo - thanks for the heads-up. I'll look for it.