Should you be using SAE 5w20?

[TomT]

"You get about 1% better fuel economy, but you get 30% shorter engine life."



Interesting read about oil weights.



Anyone here ever use SynLube Lube4Life? They claim it will last 150,000 miles.

 

[Jake Levin]

I thought there was something about NOT using 5w20 in our engines.

 

[Dingo]

Mine specifies 5W20.

 

[Todd Z]

the 4.0 V6 DOES NOT USE THE 5W20.... In the Sport trac any way....



Todd Z

 

[Chris Majeres]

I don't belive this article I think it's just somebody tring to sell some overpriced oil., I always use 5-20 motorcraft in my 03' Taurus it has 110,000 with absolutly no problems doesn't use a drop of oil, still runs like when I bought it new, so I guess if the life is decreased by 30% I really screwed up! (haha)

 

[Johnny O]

I don't have a link to the TSB here at work (I have a PDF file at www.thedieselstop.com), but the 4.0 OHV and 4.0 SOHC are two of the very few engines that Ford specifically DOES NOT recommend 5w-20 for.

The V8's are okay for it.