Coolant Question

[loontus]

Maybe they said 'no' because it is new and 'untested', at least by them.  Rotax requires it to be used (they have some 2cycles).  I think it would be better than standard stuff because it wont separate in use or when sitting for years like water will.  They mention the temp running warmer because it has a slightly lower heat capacity than water, however, the thermostats still react at the same temperatures.
About "the no pressure cap deal"; that is a choice.  You can do it, I did, but you don't have to.  It just means that the system wont blow if there is a small leak, it will likely dribble.
FWIW
Dave

[Beluga Bus]

When searching for coolant for my Powerstroke, many recommended Evans. The main downside for me was finding it locally and when on the road. For the bus, went to NAPA, they had Fleetcharge and Rotella, bought the Rotella as they only had 2 gal of Fleetcharge in stock.
Matt

[kyle4501]

Untested? Not likely.
They test all kinds of stuff, you never know when a little more spent here will save loads more elsewhere.
Why continue testing or generate extensive documentation on someone else's product if it doesn't show real promise.
However, if something shows real promise, testing continues & documentation is generated.

Mobile 1 synthetic may not be the best oil, but it is the most tested & best documented - therefore, the most predictable results. . . . .

The lower heat transfer capacity means it can't remove heat as fast from the engine OR dump it as fast in the radiator. Not a good thing in high performance systems.

When climbing grades, I need all the heat transfer I can get so I don't have to reduce speed as much to prevent overheating.

[eagle19952]

Untested? Not likely.
They test all kinds of stuff, you never know when a little more spent here will save loads more elsewhere.
Why continue testing or generate extensive documentation on someone else's product if it doesn't show real promise.
However, if something shows real promise, testing continues & documentation is generated.

Mobile 1 synthetic may not be the best oil, but it is the most tested & best documented - therefore, the most predictable results. . . . .

The lower heat transfer capacity means it can't remove heat as fast from the engine OR dump it as fast in the radiator. Not a good thing in high performance systems.

When climbing grades, I need all the heat transfer I can get so I don't have to reduce speed as much to prevent overheating.

AT 45$ a gallon...i can down shift...

[luvrbus]

AT 45$ a gallon...i can down shift...

There are other people that make it besides Evans,I saw the Peak in O'rileys it wasn't no 45 bucks a gal it was around 30 bucks but 900 bucks for antifreeze no way Jose   

[loontus]

There is no 'Peak' that is NPG unless you run it undiluted.  All of their specs use 30% to 50% water, pressurized.
I did read an RX7 post that indicated he used Peak Sierra undiluted without problems.

[luvrbus]

There is no 'Peak' that is NPG unless you run it undiluted.  All of their specs use 30% to 50% water, pressurized.
I did read an RX7 post that indicated he used Peak Sierra undiluted without problems.

It just said waterless is all I know  and was priced at 30+ bucks a gal. Star makes a synthetic that uses no water  ,with the average bus holding 30 gals that's over a 1000 bucks in coolant