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Old 10-19-2009, 11:11 AM
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Graplr Graplr is offline
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Location: Sacramento, CA
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If it is ASTM fuel you won't harm your engine. And you can run it RIGHT NOW.

It shouldn't be a problem right now on a B80 blend. Or if it hasn't even gotten down to freezing and won't for awhile, you can run B100. We have seen temps down to 20F already. I have B80 from the pump in both my suburban and Mercedes. Both started up and ran without problems in these temps.

So if you follow others' advice on B20, you should be able to run it all winter (unless it gets to -10 to -20F where you live, then probably just B5. In MN ALL diesel is B5, even when it is -20F out).
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1979 300TD
1982 300TD
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1998 E430
1984 300SD
1980 300SD
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