coolant

[Bama]

2015 Cayman S - I recently got the amber caution to check the coolant level upon start up. Owners manual cautions to use approved coolant only but I cannot find what that might be. Does anybody have any recommendations? Also, the maintenance schedule does not appear to shown a flush of the coolant system should occur. When are other owners doing theirs?

Bama

[JamesBond]

well if it down just a tad , use distilled water. There is a lot of coolant in these cars , 6-8 oz of distilled H2O is fine. On the other hand if it is down a lot, figure out if there is an issue. How many miles and has it ever been serviced?

If you have to add a lot of coolant then get it from PORSCHE , they have specific requirements for their fluids, PH is one as well as stuff that does not interact with the metals .

Porsche recommends that the coolant protection is checked every 20K miles, if it shows less than adequate protection then a flush/ fill should be done

[Bama]

Thank you. Actually down just a tad. I do not have any record of a coolant service now with 77K on the odometer. Will plan on a flush/fill in the spring. Thanks again!

[WillyDaP]

With that many miles and an aluminum block and heads I would definitely say you are due for a flush. Also keep in mind, before you get overly worried, hoses are often a culprit as they age and a small leak there, over time, can reduce fluids. Of course it means they made need changed also.

[h20cooled7]

VW coolant is what I use. Buddy works at Porsche and says its identical.

[aboyandhisdog]

I've used Zerex G40 most recently, but can't say for sure about your exact car. You can mix VW G11, G12, and G13. My car takes a Si-oat type coolant. There is nothing magical about Porsche or VW coolant - they buy it by the barrel from companies like Zerex and others that actually make coolant. If it is pink or orange you should be good-to-go. But if I were you, I'd check the owners manual for sure.