No... Dont use CT18
CT20 is fine and does no harm
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i used it to flush out the cooling system.......
the car is filthy....hasnt been washed for months......
whats the difference between washing a truck and a car.......?
do they have different paint on trucks or something......
i used ct14......what the difference between these two......
ct18 is good for cleaning the chassis and underbody.....spray it on.......wait......then gerni........
then when its all dry........lanotec.......
Lurch, Lets start at the begining - just a few methodical checks.
Remember engine oil pressure is higher than the cooling system pressure.
What is the vehicle - Make, Model, Fuel, Engine, Tranny.
Has anyone topped-up the radiator with Castrol GTX ? - Don't laugh, I've seen done.
In the bottom of your radiator tank does it have an Auto Trans cooling oil pipe running thru it - these leak internaly & no extenal leaks.
Damaged diesel fuel cooler or engine oil cooler.
Crackhed engine oil gallery - into the cooling system.
Is the turbo water cooled.
P.S. - Do not assume or guess, get expert advise
Good hunting
Get yourself a bottle of liquid drive soap and put in the radiator, go for a scoot about and dump it, you will have the nicest smelling radiator about, used to do this with my old Cherokee that had a cracked head and would once in a while push the water out replacing with the contents of the sump, this used to work very well, then we added chemi weld and she was good for another 6 months. A small bottle will do it.
CT14 will dissolve alloy, I have seen a piston left in a sump with CT 14 to clean and it stuffed the slug, for a water borne product CT14 is very nasty, we used it in the wrecking yard and ended up stop using it because of how it stained alloy. Great on steel, bad in cuts in your hands too. Trannys are very hard to flush and have them be any good afterwards, they work ok for a while but be wary of slipping. The old Cortina 4s were notorious for water in the Bordeaux autos from the radiators, nasty stuff.
CT14 degreaser, CT18 truckwash and damn good stuff!