Home › Forums › Motorcycle Tech Talk › Coolant type… › Re: Havoline® Extended Life Coolant
Buy this from the larger Caltex stops.
Or come and get the bottle of BMW coolant that Neil should have sold you 🙄 I dont need it any more as I now have an oilhead.
I also have a Clymer F650 1994-2000 manual which I'll let go of for a small fee. Pulling the 650GS apart is easy and fun 😀
'COOLANT' is a 50/50 mix of de-ionised water (rainwater to you) and a chemical whose main job is to prevent corrosion inside the engine. It has an added benefit of lowering the freezing point and raising the boiling point of the coolant - not so important in Jafaland 😉
Most waterpump failures are caused by poor coolant maintenance, e.g. adding water instead of the 50/50 mix. Too little coolant will cause cavitation erosion (water pump suffers first ) and too much coolant causes the engine to run at higher temperatures as it tends to retain heat.
I wrote this a few years ago, along with the rest of the website.
http://www.yanmarhelp.com/s_coolant.htm
The problems shown here stopped once we started using Havoline ELC.
"Havoline Extended Life Anti-Freeze/Coolant keeps protecting for up to five years or 150,000 miles." Beat that.