If you must add a 'stop leak' type product then use either a "Bars" or
"Wynn's" products - these both work in a similar way to each other
(but totally different to how Radweld works) by only solidifying were
they find an actual leak. In fact Wynn's (an American company) do some
very good additives etc.
Certainly a pin hole leak in the rad, or even hose, does make sense -
as TonyB says, whilst the cooling system is under pressure it will
leak, as the water cools it will draw in air but being such a small
hole it might not be very obvious.
I'll be very interested to hear what the final problem turns out to be -
clearly if it's under warranty then
let them sort it. Jerry and I clearly differ on Radweld, I have used it
before and never had any problems,
if it is as bad as is suggested I think it would have been sued off the
market by now. However, we'll agree to disagree.
Keep us posted!
It would be very difficult to the end user to prove that they used the
product properly and by definition, if you haven't got the money to
cure the coolant leak properly and thus use something like Radweld you
aren't going to have the money to start the legal ball rolling
either - especially if you've also just had to find the money for a
new engine or car having just had the old engine expire due to a
blocked cooling system!...
The other possibility is that the leak might be in the heater matrix
and the leaking coolant is either building up within the heater box
assembly or draining via the plenum chamber drain (the drain intended
for rain water that has entered via the air intake grill). Is there
ant hint of a slight 'acrid' smell if the heater is set to blow hot
As a conclusion (I hope) for anyone still watching.
The car is running normally now with no coolant loss. The dealer fixed it.
They don't let you near the, "technicians" so no-one at the front desk could
say what was done to fix it. Looking around the engine compartment, I
suspect it is the header tank itself that has been replaced.
They did also manage to lose the 18" square plastic engine cover and a pair
of swimming googles left in the back of the car - workshop horse play eh?
They can keep the goggles.
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