Welcome Visitor! Please take a few seconds and 
adsm08
Senior Master Grease Monkey
⭐Supporting Member
Article Contributor
Ford Technician
TRS 20th Anniversary
- Joined
- Sep 20, 2009
- Messages
- 34,623
- Points
- 3,101
- City
- Dillsburg PA
- Vehicle Year
- 1987
- Engine
- 4.0 V6
- Transmission
- Manual
- Tire Size
- 31X10.50X15
Yeah, I really doubt it will break anything that wasn't already broken.
Your cert label probably says to use 5-30 and Ford put out a TSB years ago that said pretty much all engines except the 4.0 could use 5-20.
Your cert label probably says to use 5-30 and Ford put out a TSB years ago that said pretty much all engines except the 4.0 could use 5-20.
