depends on how much i drive. I have no doubt the oil will last a year if the miles are low. But i generally dont let it go over 6k without a change. unless i have a factory change around the corner then i'll try and schedule it a little early. i also put 0w-40 in when i change especially during the summer months. i prefer a thicker oil in the warmer months especially how hot our engines get.
on my X5 i change every 5k or 6 months since thats the main vehicle for the family.
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'07 Yamaha R1 (sold)
'06 C55 AMG (sold)
‘?20 M5, MP Carbon Pro Spoiler, MP Carbon Diffuser, MP Black grille and gills, MP Carbon Mirrors, CF side sills, 789M w/ Ti studs, eventuri, Dinan X pipe
'14 X5 50i (wife’s now)
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