Paraclete
Expert
Getting ready to install rear heat exchanger but of course I need to drain the coolant.
Can some one please tell where the drain is? Any helpful hints would be appreciated.
Can some one please tell where the drain is? Any helpful hints would be appreciated.
yox185
TY 4 Stroke Master
There is no drain plug. Raise the rear of the sled high enough so the coolant will drain from there first. Then follow the instructions from the manual page I posted here.
MT.man
Pro
When I added a rear cooler I raised the rear end up and unpluged the crossover tube , min coolant loss. When I was done I filled the new cooler and was good to go.
Paraclete
Expert
Thanks guys I was worried that the coolant was not mixed correctly that is why I was going to drain and replace. I will check with hydrometer shortly .
If it is original coolent, I would still drain and replace. 6 yrs old now
Irv
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1995 XLT SP (Son's)
sleddog66 said:
Plus, from what I have read on here it is most likely straight glycol, which does not cool nearly as good as a 50/50 mix!
When I did mine, it was so dark green it almost looked black, plus it had a real slimely texture which led me to believe it was straight Glycol.
Why Yamaha chose to just use straight Glycol is beyond me!
Paraclete
Expert
Doesnt make much sense going 100%. It cost them more and does not work as good?????
nate007
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Every one of my sleds from '06 on, and every other sled I've worked on has had straight glycol, which tests at an average +15*F, which is not a good thing if your sled will ever sit outside! It should be mixed to protect to -40*F, or 55* cooler than when delivered! Dilute your coolant, always!
It's always a good idea to use distilled or deionized water as well. Even though coolants are designed to protect alloy engines, hard water (mineral deposits, lime, rust, etc) found in many tap water sources can lead to some corrosion issues over time. Coolants may protect against it, but it doesn't filter it, can't get rid of it anywhere, and a gallon or two of drinking water is cheap insurance against cooling system issues.
It's always a good idea to use distilled or deionized water as well. Even though coolants are designed to protect alloy engines, hard water (mineral deposits, lime, rust, etc) found in many tap water sources can lead to some corrosion issues over time. Coolants may protect against it, but it doesn't filter it, can't get rid of it anywhere, and a gallon or two of drinking water is cheap insurance against cooling system issues.
