wintersun wrote:
coolbreeze01 wrote:
dadwolf2 wrote:
Chevron Delo 400
Yep, fleet proven in engines that cost more than pickups........
That is a silly statement to make. Reminds me of the STP commercials that stated it as being the "racer's edge" when no race car mechanic would ever put the stuff into an engine if they valued their job.
Chevron made a CI-4 Delo 400 which was highly rated but its current CJ-4 rated Delo 400 LE is one of the lowest rated diesel motor oils you can buy and sells for 30% more than a number of top rated oils like Cummins/Valvoline Premium Blue and Pennsoil Long Life. Both these oils have tested higher than Amnsoil which cost 2-3 times as much.
A point overlooked is the buildup of sludge and soot with diesel engines and the only way to insure its removal is to change the oil and the filter. Fleet operators have chosen to not extend change intervals and rely on lab testing as a whole and I can see why. By the time you get a negative lab result the damage has been done.
Do you have a link to the testing that shows the Delo as one of the lowest rated? What criteria are they using for the rating system?
I cannot even find Pennzoil long life on their website and the Pennzoil selector recommends Rotella. Do you have a link to the long life product page? BTW Delo, Rotella and Blue are all pretty much the same price around my area.
Thanks
EDIT: Looks like Pennzoil LL was dicontined/renamed in 2010
Shell Consolidates Heavy Duty Engine Oils So I don't even see how it is relevant.