I've been doing a bit of reading and need to get my head around this post:
Originally Posted By: Quattro Pete
There is a lubrication engineer on another forum that I frequent. He works on performing the actual tests on oil in order to determine compliance with some of the Euro mfg specs. He claims that the low SAPS versions of the oils do in fact result in more engine wear (less protection), however, it's still low enough that it meets the required spec.
So basically, the low SAPS versions just barely meet the wear limits while the full SAPS versions don't come anywhere near the limit.
I asked him whether you'd actually see a noticeable difference between the two over the life of the engine. He said that by 200K miles you would.
When you look on the Lubrizol performance chart, the wear protection on low SAPS spec oils appear to be on par with mid to high SAPS - e.g. if you compare MB Sheet 229.5 and 229.5 or BMW LL-01 to BMW LL-04. Thoughts?
Originally Posted By: Quattro Pete
There is a lubrication engineer on another forum that I frequent. He works on performing the actual tests on oil in order to determine compliance with some of the Euro mfg specs. He claims that the low SAPS versions of the oils do in fact result in more engine wear (less protection), however, it's still low enough that it meets the required spec.
So basically, the low SAPS versions just barely meet the wear limits while the full SAPS versions don't come anywhere near the limit.
I asked him whether you'd actually see a noticeable difference between the two over the life of the engine. He said that by 200K miles you would.
When you look on the Lubrizol performance chart, the wear protection on low SAPS spec oils appear to be on par with mid to high SAPS - e.g. if you compare MB Sheet 229.5 and 229.5 or BMW LL-01 to BMW LL-04. Thoughts?