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I only use honda coolant. My 2003 crv has almost 300k on the original water pump.
Pentosin Pentofrost
I use the blue antifreeze (G11) that was specified for my 1987 16V. I am currently running 10W40 synthetic oil.
I use Pentofrost (Pentosin is the OEM supplier to Porsche). Our local NAPA carries it even.
Use the OEM honda stuff. It's really nice.
I'm running Honda type 2 coolant in my 94 sonoma. Flushing helped but it seems getting a good P-HOAT coolant stopped or at least paused the rusting while offering better protection.
Pentosin is one of my trusted brands. I would not hesitate to use it.
I've used pentosin E for full flushes of two Golfs (2015 and 2017). No issues. Prior to that, I used it for topping off. It's the right stuf being G13 regardless of slight color variation pink/purple.
You want the very best you gotta go Honda blue.
I used 3 of those Pentosin blue with a bottle of Water Wetter and the rest is water.. my temp is 30 degree higher than it was before and I don't know what the heck it was in there before which is this yellow/green milky stuff, it sure kept the engine mostly below 180. But now I hit 220-230 easily
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If choosing antifreeze across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare antifreeze across these categories:
In March 2026 on PartReview, antifreeze Pentosin were overall better than OEM Honda.
In March 2026 on PartReview, antifreeze Pentosin were overall more popular than OEM Honda.
By vote balance, antifreeze Pentosin surpassed OEM Honda:
By number of reviews, antifreeze Pentosin surpassed OEM Honda:
In March 2026, according to PartReview, antifreeze Pentosin and OEM Honda have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.
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For example, comparisons of antifreeze Pentosin with: Prestone, PEAK, VALVOLINE, OEM BMW, OEM Volkswagen, OEM Toyota, OEM Mazda.
Also available: comparisons of antifreeze OEM Honda with: Prestone, PEAK, VALVOLINE, OEM BMW, OEM Volkswagen, OEM Toyota, OEM Mazda.
You can also see who is better among other antifreeze manufacturers: PEAK or Prestone, Pentosin or Prestone, Prestone or VALVOLINE, Prestone or OEM BMW, Prestone or OEM Volkswagen.