I am actually more diligent on my boat engine with the coolant than I am about the oil. But in my younger years with cars I had several instances of heater cores going bad due to not replacing the coolant frequently enough. Then after a season, drain and fill again. Reviews DexCool Reviews Sort by: Recent Filter by: Any How do I know I can trust these reviews about DexCool Darren of Appomattox, VA Verified Reviewer Original review: Jan. Aluminum corrosion seems to be a factor in Yanmar's current coolant recommendations, per Mainsail's link to the url.Īs others have posted, if you don't know what currently in your engine, its probably a good idea flush thoroughly, and then again, and then even again for good measure before doing the new anti-freeze. As above, the antifreeze I am using is not on Yanmar's recommended list - but its still got to be a whole lot better than salt seawater coursing through my engine! Also, my older engine, and probably your GM series, does not have any aluminum components that I've observed. My Yanmar 2QM20 was a seawater cooled design, but modified to a self-contained antifreeze system with the addition of a bulkhead mounted heat exchanger and an extra pump. Ask an Expert Car Questions Pontiac Problems 2004 pontiac grand prix: dex cool antifreeze with another type and if robert legowski Related Pontiac Questions Disclaimer: Information in questions, answers, and other posts on this site ('Posts') comes from individual users, not JustAnswer JustAnswer is not responsible for Posts. If a vehicle was repaired under this recall, there should be a GM recall decal affixed. 2003, but was only good until July, 2004. Though Dex-Cool is supposed to last up to five years or 150,000 miles, some say changing the coolant every two years can avert many of the. 21 Do the prestone all makes coolant have the exact same amounts of 2-EHA inhibitor and would be the same issues as dexcool except at a lower price Is there a coolant with lower amounts that would a little safer, or is that kinda like just being kinda infected with a disease. Even though this anti-freeze is rated 5-year, I have changed several times. Applications include the 2004-’08 Pontiac Grand Prix. I really don't know what the PO had used, but after many drains and flush-outs and finally a refill with a well known brand of extended 5-year life green stuff, I finally got the coolant to stay clean without black. But another one or two respondents raised the possibility of a Dex-Cool issue. Responses to a post to this forum first suggested maybe a blown head gasket was allowing carbon blow-by into the coolant. We tell you about cash you can claim EVERY WEEK Sign up for our free newsletter. You can find more information on the settlement at. That was even after I had drained (once) and refilled prior to the first sail. The GM Dex-Cool class action lawsuit settlement covers 1995-2004 model year vehicles, including no-longer-built models like the Pontiac Aztec, Grand Am and Gran Prix. One of the first, and a potentially serious issue that I encountered with my boat four years ago after the first outing was noticing that the coolant was jet black.
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