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Thread: Extreme Cold Weather Oil

  1. #1
    http://www.rd400racer.com rd400racer's Avatar
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    Extreme Cold Weather Oil

    Sorry, I asked this a month ago and now the post is gone. Going to finally change out the next couple of days. I'll be riding in weather down to 10F. Can't remember if it was 14W40 or 5W50 (or maybe neither of those!). Bike is a 94 R1100RS. Also going to change tranny and rear while I'm at it. Any recommendations for that oil.
    http://www.rd400racer.com/

    2001 Ducati Monster; 1996 R1100GS; 1985 RZ350; 1977 RD400

  2. #2
    Registered User roger 04 rt's Avatar
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    Mobil 1 Racing 4T 10W-40, it is SH rated and has a relatively good cold viscosity.

    Check this out: https://www.bmwmc.net/catalog/Summar...ble%20Oils.pdf

  3. #3
    Registered User lkchris's Avatar
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    Sure, any full synthetic oil.

    Last time I read the specs, the cold pour point for 0W, 5W, and 10W Mobil 1 oils was minus 55 F.

    15W-50 was I think minus 45 F.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  4. #4
    Registered User roger 04 rt's Avatar
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    Pour points for synthetics are uniformly very low, agreed. I've been looking for the lowest 40C viscosity which ranges from 40 to 180 in the 5W to 20W range,

  5. #5
    http://www.rd400racer.com rd400racer's Avatar
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    Thanks Roger. Went with the 4T oil as recommended and went ahead and did the tranny and final with the Mobil 75W90. Took a quick ride as the snow started to fall and I swear the transmission shifted better.
    http://www.rd400racer.com/

    2001 Ducati Monster; 1996 R1100GS; 1985 RZ350; 1977 RD400

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