So previously i had a problem with the heater core fogging up the windows and now i changed the heater core..
My next problem is foam in the reservoir.. It didn't have this problem earlier. Just now after i filled the reservoir.
It's probably HG leak. I don't have money nor the tools to take out the engine and change the headgasket and get the head and block machined so i'm going to try some stopleak product.
I wonder if there's a way to test if it's really the headgasket for free?
Oil cap looks clean and the oil dipstick is free of foam.
The engine runs great and the temps are normal.
ONLY SYMPTOM IS FOAM IN THE RESERVOIR.
I wonder if the guys who tested my new heater core tested it in soap water and there's soap in the cooling system?