Blue Devil Head gasket sealer

[skagen6675]

Any of you ever try Blue Devil Gasket Sealer? My car has been over heating. I changed the thermostat, flushed it out and still over heats when its really hot outside or going up a hill. I read about Blue Devil and many people claim that it really works. Thoughts?

 

[la_fx35]

When was the last time you replace the radiator cap? May want to replace that first to see if that helps. A new radiator cap fix my Sienna overheating problem. The old cap was 10 years old though.

 

[skagen6675]

Yup replaced it when I did the flush.

 

[shadow191]

Are you burning coolant? If you're not, then it's not the head gasket.