Evans Cooling Systems Evans High Performance Waterless Engine Coolant

No, and this is the single most important thing to know before buying. Evans is a waterless coolant, so the water already in your system has to come out first. Evans' own instructions say to flush any part of the system suspected of holding residual coolant or water with Evans Prep Fluid and, in capitals, DO NOT use water, with the target being residual water below 3 percent. Skipping that step is the most common way this product disappoints an owner. Budget for the Prep Fluid (part EC42001) and the extra time as part of the job, not as an optional extra.

You lose the property you paid for. The 375°F boiling point and the low system pressure both come from there being no water in the system, so adding any water-based coolant reintroduces exactly what the conversion removed. Evans' own instructions tell you to put warning stickers on the radiator cap, the radiator shroud, the overflow bottle and the expansion tank specifically to stop this happening. The practical consequence is that a roadside gallon of green coolant is not an option for this system: any top-off has to be Evans too, so keep some in the car if you travel.

No. Evans is ethylene glycol based, the same base chemistry as the conventional coolants it replaces, and its safety data sheet carries a WARNING signal word with H302 (harmful if swallowed), H361 (suspected reproductive toxicity) and H373, plus a California Proposition 65 warning for ethylene glycol. It contains denatonium benzoate at 40 ppm, which makes it taste bitter but does not change the classification. Waterless changes how the fluid behaves thermally; it does not change the ingestion hazard, and it must be stored and disposed of with the same care as any other ethylene glycol coolant.

No. Evans meets ASTM D3306, ASTM D8085 (the non-aqueous coolant standard Evans helped develop) and ASTM D7583, which are real performance standards with real pass criteria. It carries no named original-equipment approval document number from any carmaker, because Evans runs its own specification track rather than seeking those approvals. If your owner's manual names a specific carmaker specification, this product does not carry it, and that is a decision to make with your eyes open rather than a gap to talk yourself past.

Evans states an indefinite life span and calls it a lifetime coolant under normal use. That is the manufacturer's claim, and no independent used-coolant analysis publicly corroborates it, which is why our inhibitor-package score is capped at 7 rather than higher. Treat it as a long-life fluid whose condition is still worth checking, not as a fill-and-forget guarantee.

The listing for Evans Cooling Systems Evans High Performance Waterless Engine Coolant carries a California Prop 65 warning. Evans Cooling Systems Evans High Performance Waterless Engine Coolant is a working automotive fluid rather than a passive part, so the warning points at the formulation itself. The manufacturer's Safety Data Sheet is the primary source for what is in it: the hazard classification and the PPE tiers on this page are translated from that sheet, and the full SDS is linked from the safety panel. California requires the warning whenever exposure to any of roughly 900 listed substances is possible. It does not name which substance applies to a given product, and it states no dose or risk level, so it is not on its own a measure of how hazardous this fluid is in normal use.