Sorry dude, BIG BS flag on that one.
I have been dealing with auto racing engines a lot longer than the average bear. When synthetic oil was introduced the big auto manufacturers told us that it was a total waste of time, and that regular oil was what we needed. Now that THEY bear the cost, all of a sudden synthetic is the ...., and so good that we (they) don't need to change the motor oil till 10,000mi. AND, all of a sudden that requirement occurred when THEY started bundling service/purchase price. I don't believe in coincidences.
And you cant honestly suggest that they are improving inner engine load bearing surfaces to help out the end user and some type of magical teflon type coating is being applies that now changes the wear properties of the same metal from the previous model year's engine. Come on. Cars are getting cheaper and crappier (Why I buy German).
And….I just checked. My car takes the same amount of oil that the previous three years vehicles did. So much for that deep sump theory.
Respectfully.
NOLA
Nola, your take on the deep sump theory is flawed.
BMW motorcycles(German) for example have broadly and significantly increased their oil capacities in recent years. So there's a trend with BMW in that regard.
Further, because your machine hasn't had an increase in oil capacity in line with the deep sump theory. It doesn't prove that there is no need for more oil capacity in some machines.
It only proves that the engineers(at this point in time) don't think there is a need for more oil in it. That's all it proves, and we could theorize Ad Nauseum back and forth about that.
I'm with Trans on the deep sump theory, as it's just another way to improve the longevity of "some" machines or extend service intervals. There's plenty of evidence to support that theory with machines that ultimately prove to be over driven in service.
The other ways to improve longevity and extend service intervals is to add a cooler or heat exchanger and or spec higher performance oils.
Also I would like to add that there are instances where oil capacities have been reduced. But that more often than not coincides with a new design or new make and model of machine, and I think it always coincides with higher spec oil.
Last edited: