Hi,
Hi,
I would suggest that head gasket failure can be caused by owners not changing their engine coolant at Toyota's designated intervals. Or, if the coolant was changed, that it was not replaced with the proper long life coolant. I have seen these cars still in service with 600,000 miles on the clock with the original head gasket.
Change the coolant at 5 years or 60k miles and every 50k miles or 3 years after that. During the coolant service, flush the system with distilled water with the heater on hot. By flush I mean replace the coolant with distilled water, run the car for 30 minutes and then drain it. If the water is is dirty do it again and keep doing it until it is clean. I changed the coolant on used Miata that own shortly after I bought it and I had to flush it 4 times!
Cheers
Mike