Quote:
Originally Posted by layback40
I am surprised that no one has jumped in with the origin of this "spec". After your other thread yesterday, I spoke with my contact at CAT, His view was that if I was happy to do a motor rebuild at 8~10,000 hrs, then go for the higher soot limit. I am aiming for 20,000hrs on the motors without a rebuild.
The higher levels of lead in your oil at higher soot levels shows higher bearing ware rates. The bulk of the white metal forms a "mud" in the bottom of the sump as it settles.
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Actually, the lead levels were absolutely identical (as you can see on the analysis itself that I posted elsewhere)....this was an oversight on the part of the guy in the lab. The only wear metal that showed increase was iron....neither he nor I knows what that indicates.
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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 179k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete
19 Honda CR-V EX 77k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife
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