Rotella Synthetic

[smitheb]

Anybody using Rotella Synthetic 15-40? All Wall Mart has around here is 5-40.

[Idle_Chatter]

I don't think there is any Rotella syn in 15W40 - the dino is 15W40 and the synthetic is 5W40. Not a problem, as the syn is 40W rated just like the dino - but gives the low temp flow of 5W. I've used both flavors for over 60,000 miles now with excellent analysis results on both (although my truck likes the syn better and it really helps to reduce cold start oil pressure in the Winter.)