
Originally Posted by
dvldoc
Those two oils are so close in performance it's going to have to be a choice based on price, anything over 1200ppm zinc is pretty good protection. they both have high calcium which is for cleaning your engine. Delo is more tailored for commercial vehicle use. I know here in the states it's now cheaper than Mobil Delvac 1300 super both great oils.
But the Moly level and boron do give Delo a bit of a friction protection advantage, Top one has a moly additive. I would not use this in a newer gas engine since the zinc level is around 1500ppm but for a older diesel you would be hard pressed to find a better oil that can easily run 8000kms to 10000kms with a good filter for the money.
Top 1 is one of the best bangs for the buck for most gas engines. Again it boils down to price, your not going to get significantly more wear from using top 1 over Delo on a passenger vehicle. Delo is really for big trucks and mid sized commercial vehicles. Which makes it even better for a daily driver POV.
Go on price and availability.