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Stick with your 30 weight. The engine was designed for 30; 40 will be too thick for optimal operation. 40 probably won't do enough damage to worry about (more stress
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02-02-2013, 01:45 PM
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#9 (permalink) |
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Stick with your 30 weight. The engine was designed for 30; 40 will be too thick for optimal operation. 40 probably won't do enough damage to worry about (more stress on the pump, &c), but why use the wrong stuff when the right stuff is readily available? If you were making long hauls in the desert, there might be an advantage to using 40; for everybody else, stick to the factory recommendations.
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