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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Synthetic or Mineral Engine Oil for 2 Strokes?
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[QUOTE="jaguar, post: 1468969, member: 19340"] Husqvarna did some testing in the mid 70's that was very interesting. They put 3 identical stock engines on a dyno and ran them for several days at varying RPM and load conditions. Then the motors were torn down and inspected. The engine running CASTOR based oil had the least wear, followed by the synthetic oil, and finally the engine running standard 2-cycle oil. A second test they performed was to run synthetic in 2 identical engines, one was run at 24:1 and the other was run at 50:1 The engine that ran 24:1 had less piston skirt wear, and less rod bearing wear, but had the same main roller bearing wear as the engine run at 50:1. [B]Maxima[/B] CASTOR 927 has an unpublished % of castor oil and under 50% Group 5 ester oil. I also read that castor oil smokes 50% less than regular petroleum engine oil. The main reason I've been using synthetic oil is that it smokes very little but I may just try Castor 927 since I regularly tear down the engine any way (so I can check for excess deposits in the ring lands). [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Synthetic or Mineral Engine Oil for 2 Strokes?
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