About Blue Devil Head Gasket sealant. Is the record of success as good for the 2000 Jetta 2.0 engine as it is for any other engine? I read that the smaller bottle was working good for a small engine and that it is not necessary to remove the thermostat. I guess you would want to warm it up so that the thermostat is open before installing the sealant. What do you say? Thanks, Mel
Just to be safe, you should probably just get the head gasket replaced if you suspect a leak. The sealant is meant as a temporary fix. The Blue Devil brand would be good choice if you decide to go this route. Good luck!
〉 Answered on Aug 16th, 2011 by Judy Curry, Co-Founder and Vice President of Marketing at Currys Auto Service
You should use the 16oz because it is less concentrated and works better on smaller engines. We are running a free sample campaign right now for our upcoming NASCAR race in Bristol, TN next week. I can send you a free bottle. Email me at Kpapajohn@usasealants.com. No, do NOT "warm" up the engine before installing Blue Devil. It works off temperature differentials and needs to be installed in a cold engine.
〉 Answered on Aug 16th, 2011 by Kerri Papajohn, Marketing Director at USA Sealants, Inc.