Mixing in a quart of 10w40

joshusa91 · 02-05-2012, 02:56 AM

Hey,

So my display recently indicated a low engine oil level so I dumped in a quart 10w40 synthetic castrol with the existing bmw oil already in the engine, how bad is this? Can I go without an oil change until the next cycle?

#Tee · 02-05-2012, 02:58 AM

yes

Tom K. · 02-05-2012, 10:44 AM

And when you next visit your dealer, pick up a couple of quarts of BMW branded 5w30 so that you will always have the proper oil on hand.

Tom

02-05-2012, 02:56 AM	#1
joshusa91 Registered 0 Rep 4 Posts Drives: 335i Join Date: Dec 2011 Location: sf iTrader: (0)	Mixing in a quart of 10w40 Hey, So my display recently indicated a low engine oil level so I dumped in a quart 10w40 synthetic castrol with the existing bmw oil already in the engine, how bad is this? Can I go without an oil change until the next cycle?
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02-05-2012, 02:58 AM	#2
#Tee Major General 557 Rep 5,367 Posts Drives: yes Join Date: Oct 2011 Location: Socal iTrader: (2)	yes __________________ You can follow my builds on IG: Tee212
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02-05-2012, 10:44 AM	#3
Tom K. Major General 124 Rep 5,627 Posts Drives: '07 328iT, '13 Boxster Join Date: Mar 2008 Location: Maryland iTrader: (0)	And when you next visit your dealer, pick up a couple of quarts of BMW branded 5w30 so that you will always have the proper oil on hand. Tom
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