Posted by sotxbill on October 01, 2023 at 07:03:39 from (172.59.232.71):
In Reply to: Shell Rotella? posted by Geo-TH,In on October 01, 2023 at 03:54:01:
In a comparison on diesel oil vs a well know gas oil, the TBN on the gas oil was only 7.7 where the diesel oil was 12.7. That was one of several differences. While both have a very good base oil, its the additives packages. Diesel oil must also have anti clumping compounds to keep the soot suspended. Gasoline oil does not. Diesel engine oils have a higher anti-wear (AW) load in the form of zinc dialkyldithiophosphate (ZDDP). The catalytic converters in diesel systems are designed to be able to deal with this problem, while the gasoline systems are not. This is one of the main reasons you dont want to use a diesel engine oil in your gasoline engine. If your automobile was built prior to 1975, there is a good chance it does not have a catalytic converter, and thus the above statements do not apply. Diesel engine oil has more additives per volume. The most prevalent are overbase detergent additives. This additive has several jobs, but the main ones are to neutralize acids and clean. Diesel engines create a great deal more soot and combustion byproducts. Through blow-by, these find their way into the crankcase, forcing the oil to deal with them.
Some say that HD Diesel oils should not be used in gasolene high rpm, modern emission engines due to the higher additives. However these hd oils are very good for slow rpm gas engines like our old tractors. They also allow the tractors to go much longer between oil changes as the high base number continues to fight and neutralize acids due to sulphur and moisture contamination that gas oils can not handle.
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Today's Featured Article - Show Coverage: Journey to Ankeny - by Cindy Ladage. We left Illinois on the first day of July and headed north and west for Ankeny, Iowa. Minus two kids, we traveled light with only the youngest in tow. As long as a pool was at the end of our destination she was easy to please unlike the other two who have a multitude of requirements to travel with mom and dad. Amana Colonies served as a respite where we ate a family style lunch that sustained us with more food than could reasonably fit into our ample physiques. The show at Ankeny
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