![]() ![]() Tried Dex-Cool several years ago but had some issues with leaks at all the hose connections.Can of worms you opened up there for non USA residents, unfortunately Valvoline have different formulas for different countries. I've been using it for a few years without issues, this is what I have on my own bikes. a roadside HG blowup 2/2 overheating.You can get it at most any auto parts store and it meets the ASTM-D3306 and D4985 that Aprilia calls for in the back of the 2011+ RSV4 owner's manual. ![]() However, that can be a planned operation vs. I'm sure I'll have to take the original head off to repair hardened / leaky valve seals one day. I then filled it with distilled water and ran for a few days before draining again & adding the Zerex red asian.Īlso, like many others on here, I noticed a significant reduction in coolant temps after changing all components of the cooling system. When I was baselining my 97 I made sure to drain from the brass plug on the bottom of the block. My guess is that it is more likely in a system that has seen additional water added at some point. It probably forms a tough sediment layer that gets stirred up and diluted into the new fluid during changes. I believe that it may be due to excessive rust in the system which can settle in the bottom of the block & remain outside of the regular coolant flow pattern. Regarding the recurrent brown discoloration to coolant. If using Toyota Red in the proper concentration decreases the possibility of my front heater core from failing by even a few percentage points that's a bonus. Both options work, I was mostly comparing the costs.īut irrespective of the cost of the coolant up front, the most important part of the equation, IMHO, is the compatibility of the coolant with the components in the system. So as a rough estimate, you can buy two gallons of Toyota Red every five years, or buy 3 gallons of premixed non-OEM coolant every year (based on the suggestion to change that out every year). I've had good luck/service out of using the Toyota Red, and as others smarter than I have said over the years, the Toyota engineers tested it to be compatible with the rubber components (ie: hoses, heater core O-rings, water pump seals, radiator tank seals), and plastic (heat control valve, radiator tanks), as well as the metals (copper/brass, steel, aluminum, solder of the heater cores) and sensors in the system. If you start with premixed aftermarket antifreeze from your local parts store you will need to buy 3 gallons (12 quarts) for each complete refill, then another gallon to top off if needed. So you bought two gallons of Toyota Red and two gallons of distilled water. Then top off the radiator expansion tank over the next few days with equal parts of Toyota Red and distilled water with what you have left over. So to put it more simply, pour 1-1/2 gallons of Toyota Red and 1-1/2 gallons of distilled water into the system. I think my math works out, I did some rounding, and it's been almost five years since I last flushed my cooling system, but IIRC the FZJ80 engine cooling system takes ~ 12-13 quarts (~3 gallons) of coolant. If you run the non-OEM brand coolant for the same length of time as the Toyota Red the savings is minimal, $55 versus $45 over five years, but then there's the question whether you'll get the same level of protection with the aftermarket coolant? IDK. ![]() So you could end up spending four times as much for the non-OEM coolant compared to the Toyota Red. If you change out the Zerex every year for five years you will have spent 5 x $45 = $225 over that same time period. Plus you will have some 100% coolant left over if needed for topping off during that same time period. So if you use Toyota Red 100% coolant (2 gal = $50) mixed at 50:50 with distilled water ($5) it will cost you $55 for five years. If you need to top it off you'll need a spare gallon for that, add $15.Īt a local Toyota dealer, without a discount, they charge $24.99 for a gallon of undiliuted 100% Toyota Red coolant. My local O'Reillys sells premixed Zerex Asian formula coolant at $14.99 per gallon, so you'll need a bit over 3 gallons to fill a FZJ80 cooling system. ![]()
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