May 13, 2012 · G13 coolant additive provides the same exceptional cooling and antifreeze performance as G12++, but is manufactured in an environmentally sustainable way, using glycerin instead of glycol. Glycerin, a bi-product of biodiesel production, is much less harmful to the environment than glycol-based products, which are produced from mineral oil.

Jul 24, 2019 · VW service managers, techs, and parts people have to say that because that is the VW corporate position on its coolants. If one takes a 1997 B4 Passat that came with G12 into a dealership for a new water pump, if the dealership doesn't have any G12 in stock, that car is getting G13. G13 is backwards compatible so VW installed the correct coolant.

Nov 19, 2003 · According to page 307 of the Canadian edition of the Golf owner's manual the coolant should be pink. (For 2015 Golf TDI) It says "If the fluid in the engine coolant reservoir is any color but pink, then G 13 was mixed with a different engine coolant. If this is the case, the engine coolant must...

Aug 18, 2008 · I can't be 100% sure but I have a mix of G12++ and G13 in my car now. Both play nice together but G12++ is glycol and G12++ is glycerin based. What do think. I can buy Z40 local. Q) ZEREX G40 good? It seems to be a glycol based coolant (equiv to G12++ on bottle, VW blessed, made by Valvoline,, purple color)? The tech info sounds good and can ...

Oct 7, 2017 · I used the G13 premix, which seems to have 50% coolant concentration. However, a few days ago, I had to have the evaporator replaced, and also one of the coolant hoses that goes to it from the engine. G13 coolant was nowhere to be found, and it got late. We were forced to add water to the coolant, that too tap water.

Jul 3, 2016 · Why the debate, just use G12/G13 like your manufacturer says. It's proven to work well with the test of time, where as mystery mixes and aftermarket products have a huge range from known bad to anecdotally good. As for being 'special for diesel', perhaps it is, but whatever the formula its the same one used in all VW products diesel and gas alike.

Nov 3, 2017 · G12?! I thought VW switched to G13 years ago. Did VW really switch back to G12 in 2015? I don't have a problem with G12 and am glad that's the stated coolant to use. I think G13 is unstable when overheated and is causing the clogged heater core issues on the Passats with the CRKA engine. Anyone else notice this?

Apr 17, 2013 · I have leftover, unused G13 coolant from a previous VW TDI in my garage. Not knowing any better at the time, I mixed it 50/50 with distilled water, and now 2850mL remains of the 50/50 mixture. I want to get this to 70/30 (G13/DW), so here is what I did: 70 / 30 = 2.3:1 ratio (3.3 parts total) 2850 mL of 50/50 = 1:1 @ 1425 mL G13 : 1425 mL DW

Jul 31, 2016 · Any of you guys change a heater core I’ve done 4 on 13 passat need heat and defrost in Ontario G13 seems to break down and leave these fish scale type flakes in coolant messing everything up I changed to a BMW blue coolant sorry don’t know numbers but had first winter without issues flushed well didn’t turn brown all good so far maybe 50km

Feb 12, 2018 · VW brand says it is manufactured by Valvoline in the USA and same with Zerex. Actually I went to the dealer to buy G13 but they only stock G12evo now, and I looked at the bottle there. I decided to buy Zerex for much less. I heard from an IDParts representative that VW does not currently recommend G12 for diesels.