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I found the drain plug on the 2017 Tahoe going in from the fender - not fun at all - but got a gallon of AC Delco Dexcool concentrate in …
Going to leave that alone for a year - try it again by removing the air box …
Post Your Latest Coolant Change.
- Thread starter 660mag
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Going to leave that alone for a year - try it again by removing the air box …
Here is the starting point reading, the reading after diluting it with distilled water, and the reading after draining part of the diluted mixture and adding concentrated anti-freeze. Also are the shot of the Dexcool jug, the drained fluid and the final view of the jug. Dexcool is orange but looks red through the translucent plastic of the coolant jug. Inside black drain pans it looks brown, but nope, it’s not rust. Enjoy.
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2017 Ford Explorer - 82,000 miles for first coolant drain and refill. Did it twice this afternoon.
Out - factory fill orange coolant
In - Prestone All Vehicles yellow coolant
Out - factory fill orange coolant
In - Prestone All Vehicles yellow coolant
I paid a local mechanic to replace the coolant in my inherited 98 Chevy. I just couldn’t figure out how to get my hand on the petcock and I was afraid I was going to damage the transmission cooler line when trying to disconnect the lower hose.
98 Chevy K1500 5.7L Vortec
52K miles
Out: 26 year old factory fill Dexcool
In: Prestone orange + distilled water
Should be good for another 26 years, right? LOL
98 Chevy K1500 5.7L Vortec
52K miles
Out: 26 year old factory fill Dexcool
In: Prestone orange + distilled water
Should be good for another 26 years, right? LOL
2005 Ford Taurus with 120,000 miles
Out: Prestone 5 year
In: One gallon of Prestone 10 year and a 1/2 gallon of Prestone 5 year.
I had to lower the front “valence”. There is no radiator cap as it loads through the pressurized coolant jug.
There is a plastic drain nut that turns with a large allen wrench. It has an O ring and works well.
Two gallons come out of the rad and jug, and one gallon is left behind in the block. I drained the two gallons, closed the drain and filled with two gallons of distilled water. I took the car for a 15 minute drive, then brought it back.I made sure there was hot air coming out the heater and that the rad was hot.
After cooling I drained another two gallons. The diluted coolant freeze point was 0 F indicating it was diluted down to 33% from the original -45 freezing temp in the rad. I then added 1-1/2 gallons of concentrated coolant and 1/2 gallon of distilled water. Took it for a drive and I’ll check the concentration when it cools. The coolant looks green in the drain pan but is actually yellow/green.
Both the new 10 year and 5 year have a yellow look. The coolant in the tester is the coolant that was in the rad before I first drained it.
Out: Prestone 5 year
In: One gallon of Prestone 10 year and a 1/2 gallon of Prestone 5 year.
I had to lower the front “valence”. There is no radiator cap as it loads through the pressurized coolant jug.
There is a plastic drain nut that turns with a large allen wrench. It has an O ring and works well.
Two gallons come out of the rad and jug, and one gallon is left behind in the block. I drained the two gallons, closed the drain and filled with two gallons of distilled water. I took the car for a 15 minute drive, then brought it back.I made sure there was hot air coming out the heater and that the rad was hot.
After cooling I drained another two gallons. The diluted coolant freeze point was 0 F indicating it was diluted down to 33% from the original -45 freezing temp in the rad. I then added 1-1/2 gallons of concentrated coolant and 1/2 gallon of distilled water. Took it for a drive and I’ll check the concentration when it cools. The coolant looks green in the drain pan but is actually yellow/green.
Both the new 10 year and 5 year have a yellow look. The coolant in the tester is the coolant that was in the rad before I first drained it.
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Here is a shot of the diluted coolant I drained after circulation with the two gallons of distilled water. Also are two shots of the concentrated 10 year (first) and 5 year (second) concentrated coolants going in. All done. Final shot is the jug. I had to dispose of 4 gallons of used coolant that virtually looked new hopefully meaning my original rad and heater core are in good shape.
And here is the final shot after it mixed and cooled down. It’s good for below -45 F. ( just in case I drive to Edmonton.) Notice the yellow green colour of the Prestone coolant.
2015 Subaru Outback
Out: OEM factory fill
In: Zerex Asian Blue
Out: OEM factory fill
In: Zerex Asian Blue
08 Lexus rx350 144k miles, drain and fill
Out: pink coolant
In: Peak concentrate pink, distilled water approx 50/50
Out: pink coolant
In: Peak concentrate pink, distilled water approx 50/50
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