Hi guys,
Just wondering, what exactly does it mean when a engine oil has a "Energy Conserving" sticker on it?
I went through some threads in BITOG and found out that a energy conserving oil is designed to thin a little thus improving fuel consumption. Is that all?
Some guys in BITOG says that a energy conserving 10W-30 oil like RP will thin to 20wt by 5000 miles.