The company that manufactures the cooling system sealer supplies GM with the material in pellet form and also sells under the BarsLeaks brand name. "The GM coolant supplement pellets and the BarsLeaks "golden seal" are the same material. It causes no harm and will be perfectly benign unless there is a leak somewhere." social media marketing cheat sheet pdf Prestone Extended Life Antifreeze Coolant Msds Prestone Dex-Cool Concentrated 50/50. I would add 6 of the coolant supplement pellets to ensure a positive seal of the system. It is/was factory installed in that system and needs to be replenished over time and/or as the cooling system is refreshed. An engine like the 4.3 can leak coolant internally if a gasket starts to fail or something so the coolant supplement/sealer is good insurance against this. I personally always recommend the use of the GM coolant supplement pellets ( or the equivalent BarsLeaks products HDC ) to ensure against any internal coolant leaks into the oil. PEAK OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant for North American Vehicles, 1 Gal. 4.0 out of 5 stars : Best Sellers Rank 339,266 in Automotive. Customer Reviews: 4.0 4.0 out of 5 stars 11 ratings. It is well tested and an excellent product if used correctly. Prestone Dex-Cool Extended Life Antifreeze/Coolant. You should have absolutely no problems with DexCool. so.once per month or so, check the radiator itself to make sure it is completely full to the brim as evidence that the cap is working correctly. If the cap is malfunctioning, the wrong cap or if the hose to the coolant recovery bottle has a hole/crack/kink the radiator cannot pull coolant back into the system when it cools down and the level will steadily drop and will run low. It would have been easier to just check the coolant level occasionally.Ĭhecking the coolant recovery bottle is a good way to do it for routine look sees but it is a good idea to pop the pressure cap off occasionally when the system is cold and check the radiator level, too. so.the system would not pressurize and would overheat. Prestone AF850 Dex-Cool 50/50 Antifreeze - 1 Gallon. Works with all fluid colors All OAT, POAT, HOAT & IAT. The mud from the rust accumulation would build up in the pressure cap fitting and unseat the presure cap seal. 4.6 268 ratings About this item Antifreeze Coolant, 1 gal., 50/50 - AF2100 Formulated to work with All Vehicles. The problem compounded itself over time on some vehicles that were run in a chronic low state. It just doesn't tolerate the system running low as well as some of the silicated coolants. Just keep the system full and DexCool is great stuff. If the system runs low long enough it will accumulate enough rust to actually get muddy. The red sludge you describe with DexCool is simply rust. The surface drys again, rusts and another slug of coolant comes along and washes the rust off. Then along comes a slug of coolant and washes the rust off. When the system runs low on coolant, areas of the head will loose coolant and the inner surface of the coolant passage will almost instantly dry out due to the heat and haze over with red surface rust. With DexCool, the surface is very well protected as long as it is wet with the coolant. Where silicated coolants "plated" the inner surfaces of the cooling system and passages in the block and heads and provided some level of corrosion protection when the surface would dry out due to low coolant levels. "The problem that people experience with DexCool is in engines with cast iron heads (like the 4.3) when the systems run low. However, if you’re unsure of which fluid to use to keep your vehicle performing at its best, refer to your owner’s manual or ask a trusted mechanic.From a GM engineer who was on BITOG, but left when he got tired of the abuse. We selected five of the best-rated antifreeze and coolant fluids that are also compatible with most vehicle makes and models. When browsing the various types of fluids, it’s easy to get confused. Running your car on older deteriorating antifreeze or coolant can cause acid buildup, scaling and reduced resistance to extreme temperatures. The longer you use coolant, the more its useful chemical properties break down. Performing routine maintenance on your vehicle’s cooling system will ultimately prolong the engine’s life. Antifreeze also fends off rust and corrosion, helping to extend the life of water pumps, radiators and other cooling system components. In the winter, the chemical formulas in antifreeze also prevent water and moisture from freezing, which can damage the cooling passages inside the engine and other components just as it would the pipes in your house. Combustion engines generate lots of heat, and coolant, a mixture of antifreeze and water, plays a vital role in regulating their operating temperatures.
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