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MX | Off-Road Gear Info & Reviews
Tranny Oils? What to Use?
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[QUOTE="Rich Rohrich, post: 650979, member: 16241"] My concerns about the newer SL oils appear to be completely unfounded. Here's some info on SL oils written by Allan Perry, Technical Specialist for Union 76. [i]A third goal of API SL/ILSAC GF-3 was to ensure better protection of emissions control system catalysts. This is in response to the EPA mandating extension of emissions system warranty coverage from 50,000 miles to 100,000 miles. Under API SJ/ILSAC GF-2, engine oils were restricted to a maximum of 0.10 wt% phosphorus in order to protect emissions catalysts. Originally, there was a desire to lower the maximum allowable phosphorus content of engine oils to 0.08 wt%. However, this was dropped because of concerns about engine wear (the source of phosphorus in engine oils is the zinc dithiophosphate antiwear additive) and because a suitable test for measuring protection of emissions systems could not be completed in time. Instead, the automakers opted for substantially reducing oil volatility limits from 22% maximum (by NOACK) to 15% maximum. Lower volatility means there is less potential for hydrocarbon contamination of emissions catalysts. It also means less oil consumption due to lower evaporative losses. In order to meet these stricter volatility limits, API SL/ILSAC GF-3 oils require the use of higher quality base oils, especially for the lighter (and preferred) viscosity grades. SAE 5W-20 and SAE 5W-30 oils cannot be formulated with 100% Group I base oils because they will not meet the volatility limits; they require high percentages of Group II or Group II+ quality base oils. Depending on the basestock source, some Group II/Group I mixtures may qualify, while other formulations may require some Group III or Group IV base oil.[/i] As for the Quaker State oil you mentioned Jeff, I have no idea. I've never used Quaker Stater oil in anything, car bike or even lawnmower so your guess is as good as mine on how well it will perform. ;) Try it out and let us know. [/QUOTE]
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MX | Off-Road Gear Info & Reviews
Tranny Oils? What to Use?
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