classicalgreen
Active Member
I am using waterless coolant in my 3500 auto. have been moving it up and down a short drive while not on road to keep things free and moving such as brakes! I ran engine for about 5 mins varying speeds from idle to about 2500 .engine has no thermostat fitted ta moment. about 3-4 days later I thought I might check oil and water. when releasing rad cap about a cup full of. coolant shot out everywhere.. so there is pressure rebuild up. cll pressure checks. show all within 10% of each other and oil is clear ..no mayonnaise etc . as was thinking suspect head gasket fail but surely pressure ought to reduce after such a time with stone cold engine? I normally top level too cover. calling fins in rad. leaving decent. room fo rain expansion. No header tall fitted and a 15lbs cap being used /no external coolant leaks found. Oil leaks another thing! anybody have ideas? don't fancy having to remove both heads but only fault I have noticed is when In heavy traffic on hot days or travelling at. near legal speed limit ( rare) temp gauge will climb past midway..rad has been off car and back flushed. and drained ( twice) engine and heater matrix also back flushed . marina debris ( rust?) found bottom of rad near inlet hose but about half a cup at most whole rad.. my thoughts are thats if got to be heads off at some stage and check for porosity and resave will full gasket set . wife isn't keen on car anyway as a money pit so trying to keep expenditure to minimum and time 'not running' out of her vision. any. pointers. would Venice of anybody had this ?