Evans waterless coolant

don Freimark

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Don F.
Use or dump? Rotax 912 UL 80hp. Coolant Is indicating255 F/Oil is 190 F,Exterior heat gun on Radiator shows 170 F in the inlet area and 140 F on the outlet area. I suspect a bad water temp sender. Thanks for ANY Ideas/suggestions.
 
You should have two cylinder temperature sensors on the engine - do they agree?
255F is too high for 50/50 - but the temperature may come down a bit with 50/50 since it has a higher heat capacity.
Waterless coolant isn't good for operating below -10F or with cylinder heads manufactured after 2013.

https://www.rotax-owner.com/pdf/IM_912_Series_Ed3_R0.pdf
 
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