Question about 2003 Suzuki RM 125

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Oil weight and amount to go into case of early 80's rm 125

Not sure of oil weight and amount to put in 81 rm 125 and a good brand to use.

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  • Anonymous Mar 15, 2014

    If I am not sure what weight is in engine oil, can I top off with any weight. On a 1998 fatboy



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I would reccomend amsoil synthetic 10w30

Posted on Apr 24, 2009

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  • workhorsemo Apr 24, 2009

    also you should fill it to 1/2 inch from the top

    but for the best performance you should first drain the old oil from the crank case there will be a drain plug most are on the left side, maybe right side

    it will be on the bottom of the crank case.

    i would aso recommend cleaning or replacing the air filter

    you can clean the air filter by soaking it in gas for 5 mins.

    any questions..

  • workhorsemo Apr 24, 2009

    ----mobil 1 synthetic is a good brand----

    mobil 1 is also a good brand to use pick a brand google it, make sure its SAE 10w30 though.

    it should say on the side of the crank case its size

    750cc to 850cc which is just under 3/4 of a 1 quart bottle.

    ---You should really drain the oil first!!---

  • workhorsemo Apr 24, 2009

    did you read all three postings?

    i think everything is there?



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