Creamy light brown/tan gunk in coolant tank

[BYprodriver]

Hmmm, how can I convert my limited funds to depleted...

[Cloudsurfer]

Originally Posted by BYprodriver

Hmmm, how can I convert my limited funds to depleted...

I'll second that...

[BYprodriver]

Ran across the factory procedure for cleaning oil from coolant system in service manual Group 1 part 2 way in back of manual printed in 2002. Interesting that intermix is common enough problem to require update in manual with specialized equipment but not until 2002. I would be sure & have this procedure done after intermix repair.

[JFP in PA]

Good luck trying to find the listed cleaning agent to add to the cooling system; fortunately, Prestone make a good one that works fine for this...........

[gcorteen]

Are you saying that even after the system is flushed I should add something to the coolant to help with the little bit of oil that will inevitably still be in there? What is this product? Oil cooler was leaking and has been changed and car is being flushed repeatedly right now. Thanks.

[JFP in PA]

No, the cleaning additive is used with straight water, allowed to circulate and then drained, usually multiple times, then the system is flushed with clear water a couple times, then refilled with the proper coolant mix. Some shops, like mine, have fabricated connectors that allow us to run clean hot water thru the entire system for long periods without the engine running for this purpose. Typically, this is a "time and materials" type project, once the source of the intermix in found and fixed.......

[gcorteen]

Just spoke to the shop that replaced the oil cooler. They have flushed the coolant system twice with an additive, but the lines running to and from the radiator are still loaded with oil. Not sure if they are flushing with the engine running, is this important? Any other steps that may help?