Quote:
Originally Posted by chmura
I read on here that someone said to help prevent it is to change your coolant regularly with oem toyota coolant as there could be composition change in the old coolant causing a premature head gasket failure.
I changed my coolant a few months ago with oem Toyota coolant and I'm at 50k miles. Just playing it safe.
I also read that if you go to the Toyota Parts department and buy a head gasket from them it will be different than your original. There was a redesign in the head gasket.
What I want to find out is when did this head gasket redesign take place? What year 4runners have this updated redesigned head gasket? Or did this update take place after the 4th generation production?? That would mean we all have the "old style" head gasket in our 4runners through 2003-2009 years. Would be very interesting to find this out!
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I don't know when the superseded headgasket came out... I think I asked the parts guy to see if he could tell me when it was added but he couldn't find it. I think it applies to all the older (Non-dual VVTi) 1GR-FE engines, but I could be wrong as we haven't had to replace one at our dealership yet.
Quote:
Originally Posted by oljedi11950
The City & Chmura I think our resident mech BWINC should chime in on this ? Would be nice to know if this sort of preventative maint. would help ie: replace new head gasket before failure ?
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Sure, preventative maintenance is this: Buy the V8!
But seriously, I don't think there is preventative maintenance for a poor design? I mean you could try a shorter coolant flush interval with Super Long Life Coolant; but I don't think it will guarantee anything?
If you had the money/time/insanity/OCD I guess you could proactively replace the head gasket with the update part... but that's a lot of labor and work to be honest with you? I'm really surprised Toyota hasn't done anything to address this and am waiting for a factory rep to stop by one of these days to pester him about it; all I can say for now is to report them to Toyota as they happen, ***** and complain to them, and hope for the best...
