Coolant leaking out quite aggressively?
01-10-2012, 04:13 PM
#17
Rennlist Member
Why not? Its $10/gl for Prestone. If there is a real need for the Porsche "special" coolant then I would use it. But as I said before if its just that Porsche wants you to spend $60 on coolant (and hence the reason for their recommendation), then no thanks.
From Wayne on that Pelican thread "The reality is that any good, modern coolant will work"
From Wayne on that Pelican thread "The reality is that any good, modern coolant will work"
Last edited by jhbrennan; 01-10-2012 at 04:53 PM.
01-10-2012, 04:20 PM
#18
Drifting
If you have to put a gallon in, at that point, you should realize there is a serious issue with a leak somewhere. Normal operation would not loose any coolant.
If the hose clamp came off, the other question to be asked is, why did it come off? Was there an overpressure due to an obstruction such as a stuck thermostat? Or was the clamp just not installed properly.
I think the crazy issue with two different types of coolant that have bad interactions have been resolved.. but its always good to make sure you have one that matches the active ingredients in the coolant you currently use. Where you buy the coolant is irrellivant.... as the same formations are likely used in all sorts of cars.. there is nothing magical about Porsche cars that changes the boiling point of water or the need to keep it from boiling at operational temps, and the pcars don't run at an unusually high water temp.
If you run in cold winter, the antifreeze component of the coolant would be important, where plain distilled water would not be ideal.
If the hose clamp came off, the other question to be asked is, why did it come off? Was there an overpressure due to an obstruction such as a stuck thermostat? Or was the clamp just not installed properly.
I think the crazy issue with two different types of coolant that have bad interactions have been resolved.. but its always good to make sure you have one that matches the active ingredients in the coolant you currently use. Where you buy the coolant is irrellivant.... as the same formations are likely used in all sorts of cars.. there is nothing magical about Porsche cars that changes the boiling point of water or the need to keep it from boiling at operational temps, and the pcars don't run at an unusually high water temp.
If you run in cold winter, the antifreeze component of the coolant would be important, where plain distilled water would not be ideal.
01-10-2012, 05:10 PM
#19
Drifting
Thread Starter
And therefore back to the original problem. As mentioned I put a gallon in and it drained out. Put some back in, drove the same route and nothing drained out?? If no further drainage then I will get it off the ground on the weekend and check out the clamps to see if I can find the problem
(And I will use the Prestone stuff unless I can find some evidence somewhere that Porsche has a "special sauce" ....and if I spent $6k on a rebuild the diference between $10 and $100/gallon would make a difference but thats just me
(And I will use the Prestone stuff unless I can find some evidence somewhere that Porsche has a "special sauce" ....and if I spent $6k on a rebuild the diference between $10 and $100/gallon would make a difference but thats just me
01-10-2012, 05:39 PM
#20
Porsche coolant uses corrosion-inhibiting additives that are based on a chemistry called "Organic Acid Technology" (OAT). Antifreezes with OAT corrosion inhibitors contain organic acid salts of mono- and dicarboxylic acids such as sebasic and octanoic acids, plus tolytriazole. The coolant is less alkaline and protects with a pH reading of only about 8.3. Brands with the OAT additive package include Texaco/Havoline’s "Dex-Cool" and Prestone’s "Extended Life 5/150" antifreeze. OAT coolants contain orange dye to distinguish them from other coolants with conventional additive packages.
Porsche has a TSB out as of 1997 that clearly states to use silicate free antifreeze. So, as long as you use the correct type it really doenst matter whether it’s Prestone, ELF or whatever.
Porsche has a TSB out as of 1997 that clearly states to use silicate free antifreeze. So, as long as you use the correct type it really doenst matter whether it’s Prestone, ELF or whatever.
01-20-2012, 01:10 PM
#23
Drifting
Thread Starter
Post mortem: Took it to my mechanic and the coolant pipe and coupler were damaged. It has started to leak more aggresively but he said it had been damged a while ago as there was some corrosion. He replaced the parts and all set.
These pipes on both sides are right above the under panelling so an aggresive hit to the panelling (speedbump etc) can damage them
These pipes on both sides are right above the under panelling so an aggresive hit to the panelling (speedbump etc) can damage them
01-24-2012, 04:41 PM
#24
Drifting
Speedbump? More like bottoming out on a curbstone. Good to know.. now if I ever do bottom out the paneling (under the doors or where.. at the nose?) I'll know to pull the panel and check the plumbing.
