1500 mile update on Rotella Syn ... not much to report.
Impressions (can't say data based) ... just general observations:
1. Perhaps less smoke on startup than with M1 15-50
2. Maybe higher oil pressure on the gauge, during low rpm operations, than with M1 15-50
Will continue to report if anything else of interest.
The price at Walmart was what got my attention ... a bit over $3.20 a quart ... since then more synthetics are available.
Would obviously prefer Delvac 1, but, I think I can offset the inherent long drain interval advantages by changing mine a bit for often.
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg