chazvr 1 Posted November 2, 2009 Report Share Posted November 2, 2009 i took my car for service couple months back at a nationwide garage and they filled it with what i'm assuming run of the mill blue coolant. I need to top it up. Can i put g12 plus plus straight in as ive heard this will mix with any coolant. thought id ask as i don't want to end up with browness in my system.cheers Link to post Share on other sites
Antihero1981 8 Posted November 2, 2009 Report Share Posted November 2, 2009 why not just flush it out and refill? Link to post Share on other sites
akz786 0 Posted November 4, 2009 Report Share Posted November 4, 2009 Yes you can...as rule of thumb G11 (old blue stuff) + G12 (old pink stuff) DO NOT MIX G12+ will mix with both of them....However to increase efficiency, just drain it all out and use fresh G12+, has better properties on its own I believe.Hope this helps..... Link to post Share on other sites
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