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Per Pelican Parts, there is a drain plug on the lower right side of the radiator. Mine doesn't seem to have one. Any hints here? What is the recommended replacement coolant? I have searched the forum and found Glysantin, but don't see any suppliers for it.
Per Pelican Parts, there is a drain plug on the lower right side of the radiator. Mine doesn't seem to have one. Any hints here? What is the recommended replacement coolant? I have searched the forum and found Glysantin, but don't see any suppliers for it.
what's the year / model is your Cayenne?
What kind of coolant is there currently?
Just get OEM, you can buy a gallon of concentrated anti-freeze for under $40 bucks online, even the dealer shouldn't charge much more than that.
what's the year / model is your Cayenne?
What kind of coolant is there currently?
Just get OEM, you can buy a gallon of concentrated anti-freeze for under $40 bucks online, even the dealer shouldn't charge much more than that.
Buy the pink Porsche coolant concentrate. Dilute to 50/50 mix with distilled water.
Best way to refill any cooling system is with an AirLift tool that creates a vacuum in the system using your air compressor (you can also test the system for leaks in this part of the process) then refills it with a separate attachment into a bottle or bucket. Saves you all the running, burping, rerunning, etc and keeps any air from being trapped in the system.
Fill it this way, drive it once, let it cool down, top it up once and you're done.
Just used mine on both my 928 and my pickup in the last week.
Buy the pink Porsche coolant concentrate. Dilute to 50/50 mix with distilled water.
Best way to refill any cooling system is with an AirLift tool that creates a vacuum in the system using your air compressor (you can also test the system for leaks in this part of the process) then refills it with a separate attachment into a bottle or bucket. Saves you all the running, burping, rerunning, etc and keeps any air from being trapped in the system.
Fill it this way, drive it once, let it cool down, top it up once and you're done.
Just used mine on both my 928 and my pickup in the last week.
I have one of these on order, plus a couple gallons of coolant. What about the grease? Some parts houses don't even carry it. I can probably pick some up at the local dealership, but it really should be mentioned when purchasing the thermostat
I have one of these on order, plus a couple gallons of coolant. What about the grease? Some parts houses don't even carry it. I can probably pick some up at the local dealership, but it really should be mentioned when purchasing the thermostat
What's the grease for? Is it for the o-ring in the thermostat housing? I just use silicone o-ring lubricant whenever I install an o ring. The objective or o-ring lubricant is to allow the o-ring to slide in properly without cutting, binding, or coming out of the groove it's supposed to be retained in. Unless the grease serves some other purpose than what I've listed, can't see why you'd need a special grease.
Don't get me wrong, there are situations in Porsches where you need a special grease, like on a 928 splined clutch shaft, but for a regular sealing o-ring, I can't see that you would.
Disclaimer - I've not yet done this job on my Cayenne.
What's the grease for? Is it for the o-ring in the thermostat housing? I just use silicone o-ring lubricant whenever I install an o ring. The objective or o-ring lubricant is to allow the o-ring to slide in properly without cutting, binding, or coming out of the groove it's supposed to be retained in. Unless the grease serves some other purpose than what I've listed, can't see why you'd need a special grease.
Don't get me wrong, there are situations in Porsches where you need a special grease, like on a 928 splined clutch shaft, but for a regular sealing o-ring, I can't see that you would.
Disclaimer - I've not yet done this job on my Cayenne.
The Pelican Parts tech article for 4.8L thermostat replacement mentions it specifically, as a separate step "Porsche makes a very special lubricant that you must use when installing the new thermostat and socket." I just noticed it is not mentioned for the V6 tech article
But how do you DRAIN it?
Like not just open the plug and let it run out but drain ALL of it, including the volume trapped in the horizontal pipes in and around the engine block?
Last edited by Hoo Host; Apr 12, 2023 at 04:06 PM.
Reason: add clarification
The Pelican Parts tech article for 4.8L thermostat replacement mentions it specifically, as a separate step "Porsche makes a very special lubricant that you must use when installing the new thermostat and socket." I just noticed it is not mentioned for the V6 tech article
Porsche makes a lot of special parts for all kinds of special people. If it makes you feel better, go for the Porsche special lubricant.
I had Toyota rubber grease on hand, worked great on the o-rings when I did the job few weeks ago. Did a 1000+ road trip pulling a new to me Spec Miata racecar, and my special needs Porsche hasn't blown up, yet. Yea, I also have Toyota T-IV ATF in my Cayenne transmission, instead of the Porsche Special and Unique ATF. Now that I have more Mazda's, I'll try to figure out a way to use Mazda parts/lubes on the Porsche.
I'll probably burn in Porsche hell for all the un-special stuff I've used on my very special Porsche, I get it.
Draining and replacing coolant
