A couple weeks ago there was a discussion about using diesel engine lube oil in a gas engine. With reference to that discussion, can any of you chemists comment on the relative quality of MOBILE Delvac 1300 Super. There are no codes on the container as discussed in that thread. The only codes I could find were "API SERVICE CI-4, CH-4/SL". What does all of this mean?
John.
John.
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