Can I mix synthetic oils?

ChitownM3 · 05-24-2009, 09:51 PM

I have some bottles of 5w-30 mobil synethtic sitting around for my other car. The reason I ask, is because I took my car in for the 2nd ever oil change 1 week ago and I'm leaving a small puddle of oil everywhere I go. When the oil was changed it was at the half mark, it's now at the 1/4 mark of the meter but still says OK. I'm just worried that it'll ask me to add a quart of oil to the car before Tuesday when I'm going to bring it in.

Radiation Joe · 05-25-2009, 10:11 AM

You won't hurt anything just using it to top off once or twice.

I wouldn't put in more than a quart, though. Only because it's 5W-30, not because it isn't the BMW junk.

05-24-2009, 09:51 PM	#1
ChitownM3 Lieutenant 28 Rep 491 Posts Drives: 2001 SS Camaro Join Date: Jun 2007 Location: Burbs of Chicago iTrader: (0)	Can I mix synthetic oils? I have some bottles of 5w-30 mobil synethtic sitting around for my other car. The reason I ask, is because I took my car in for the 2nd ever oil change 1 week ago and I'm leaving a small puddle of oil everywhere I go. When the oil was changed it was at the half mark, it's now at the 1/4 mark of the meter but still says OK. I'm just worried that it'll ask me to add a quart of oil to the car before Tuesday when I'm going to bring it in.
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05-25-2009, 10:11 AM	#2
Radiation Joe Veni Vidi Vici 89 Rep 2,750 Posts Drives: '11 JB/BBe-6sp-e90 Join Date: Jul 2008 Location: Macungie PA iTrader: (0) Garage List 2011 e90 M3-Sold [8.50] 2003 RS6 - Sold [0.00] 2009 e90 M3 - Gone [0.00] 2003 M3 SOLD [0.00] old 2002 [10.00]	You won't hurt anything just using it to top off once or twice. I wouldn't put in more than a quart, though. Only because it's 5W-30, not because it isn't the BMW junk.
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