It's silly to talk about 'Rotella' without specifying which particular product you're talking about. Most stores carry three different Rotella oils: conventional T4, semi-synthetic T5 and full-synthetic T6. They're quite different and meet different specifications. And there are other products marketed under the Rotella brand, although most are not readily available.
One of the more interesting oil specs is JASO MA, which means the oil is approved for use in motorcycles with wet clutches. (Which is to say virtually every non-BMW bike on the road.) Shell says Rotella T4 and T6 meet JASO MA and MA2, but they don't make the same claim for Rotella T5. Go figure. At any rate, Rotella T6 is a pretty cost-effective substitute for synthetic motorcycle oils like Mobil 1 Racing 4T, which runs about ten bucks a quart.
A friend of mine who was a powertrain engineer for a major OEM told me they were having piston ring problems with conventional oils a few years back. Those problems disappeared when they tested with Mobil 1. Which explains why more and more OEMs are specifying full or semi synthetic engine oils. Not all oils are the same.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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