Detergent and non-detergent oils do not do the same thing in an engine. The benefits of detergents in gasoline engines have been shown by repeated tests under arduous conditions for close to a century. No benefit is gained by using non-detergent oil except in special circumstances like air compressors and some hydraulic systems. My local auto parts store sells quarts of non-detergent oil at the same price as detergent oil, so no money is saved by skipping the detergent. If anything, detergent oil can be easily purchased in bulk at a discount--actually saving money. Engines using non-detergent oils also require more frequent oil changes--driving costs up further.
The sludge build-up in Mopars (usually Dodge Intrepids, but also others) was caused by poor crankcase ventilation and other design problems. It ultimately went to arbitration, and Chrysler ended up paying restitution. Had non-detergent oil been used in the same engines, the problems would have been even worse.
I've posted a link to a technical description of the various additives and what they do in modern oils.
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Today's Featured Article - Trailering Your Tractor - by Curtis Von Fange. One of the fun things of summer and fall are the parades and tractor shows that go on across America. Many owners of tractors travel long distances to attend these shows and they usually take their restored iron along with them. Safe trailering practices and inspections will ensure that the event is a fun one. A good habit to develop when using a trailer is to give that �quick look over� before taking it on a trip. Before hooking up to it check the tongue for proper operation. The latche
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