According to Chevron, the Sulfated Ash level of the Delo 400 5w-40 synth is 1.5. This is the highest I've seen so far, and even higher than Delvac 1. Since I can't find Delvac 1 around here, but Delo 400 Synth is available locally at the nearby distributor, I'd like to give this oil a try.
Is the sulfated ash level too high for use in a passenger car or am I just over analyzing the numbers here?
Is the sulfated ash level too high for use in a passenger car or am I just over analyzing the numbers here?