Do you think that previous API SL lubricants, non OLM lubricants, e.g. say the lowly everyday Formula Shell conventional with their 250-300ppm DN Moly, the higher treat rate of ZnDTP and low starting TBN would not/do not have LSPI concerns? This discussion might suggest so. Food for thought.
Some daydreaming during the lab lecture: One would assume a low TBN formulation for ultra low wear/ low hour interval would have Ca/Mg treat under 0.1% under a boosted moly carboxylate or Trimer +PS as an AW/EP balanced package. Simar to a motorsport/track lubricant but something more than a one day event and dump scheme. Nice for turbocharged HSO at possibly 3-4k mi. intervals.
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In a round about way now, though initially blunt in my first comment (post#7). The O.P is not using this oil to max benefit as a LL lubricant. Reasons revealed: 1) Warranty stipulation, 2) Winter interval with remote start events, 3) Fuel dilution concerns, 4) SAE 20 grade.
I see now he decided to up the service interval to 7.5K One would say still underutilised with mg/ca nearly a whopping 0.3%
He could try an OLM style Dexos product, and perform another UOA but the data from switching around would not be valid, though I predict surely comment worthy nonetheless, Lol.
Now the biggest question may be
@cammyfive79 comment " ... I doubt we will have this vehicle (mazda cx 90) for the long haul"
Cammy, Why?!
(Oops! Just saw your post above while I was yacking away with
@Mania)
