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Cory

Low Coolant level on my LS3

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Cory

I'm getting ready to do my winterizing this year. We put 82 hrs on our new 2015 LS3--that's a great year for us. I noticed my coolant is low. The engine is cold and the coolant is well below the min level mark. On the trailer, there is only a little in the reservoir. I'd guess I need 1/3 Qt to fill back up to the min level mark. The bilge is clean and dry as far as I can see. Is it normal for a new engine to consume this much coolant over 80 hrs of use? It was at the min level mark when the cold engine was new at 0.7 hrs.

What name brand should I use to top it off? I know it's propylene glycol that I need, but I'd like to use the same stuff the factory put in there. It appears to be green. Any recommendations where to buy a quarts worth of it?

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REW

I wouldn't worry too much about the brand, just make sure the colors match. Some product labels say you can mix them others say not too, I'm pretty sure any auto parts store can sell you a gallon of premixed.

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Fman

Winterization? The good riding starts right now for the next couple months!!!

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Lance B. Johnson

I wouldn't worry too much about the brand, just make sure the colors match. Some product labels say you can mix them others say not too, I'm pretty sure any auto parts store can sell you a gallon of premixed.

Compatibility between coolants is a big issue these days. Color isn't an indicator of compatibility. Ex. Toyota and Dodge both have red coolants but should not be mixed.

I would be inclined to research the correct coolant and use that only.

My hunch would be that the coolant is GM dexcool for your engine Cory. BICBW, you should look it up.

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oldjeep

Page 2-57 of your 2015 Malibu manual tells you Sierra brand propylene glycol.

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Cory

That stuff is hard to find. I can only find it in bundles of 6 1Gal jugs for the full concentration stuff... I want one galon preferrably of the 50/50 mix.

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oldjeep

I used to just buy it at O'Reilly when I used it in my off road jeeps. Haven't looked for it for a while, but it looks like ace, amazon, Napa can all get it if your local boat supply place can't.

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Stevo

That stuff is hard to find. I can only find it in bundles of 6 1Gal jugs for the full concentration stuff... I want one galon preferrably of the 50/50 mix.

sounds like a group buy

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Cory

My local NAPA store sells Sierra Green full strength for $16/gal.

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REW

Compatibility between coolants is a big issue these days. Color isn't an indicator of compatibility. Ex. Toyota and Dodge both have red coolants but should not be mixed.

I would be inclined to research the correct coolant and use that only.

My hunch would be that the coolant is GM dexcool for your engine Cory. BICBW, you should look it up.

Interesting, Aluminum blocks?

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