Its when u reach ur 20.000 miles mark. But i would do it just way ahead 2 b on the safe side & do like u do keep a maintenance log or book of the up keeps no matter what it is & how many VECHILES or atvs jetski bike boats etc that way u know 4 sure & thats goes 4 topping off ur fluids !good luck & thk u
20,000miles or 2 years
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