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Toyota techs here? 2grfe head gasket? #5379005 03/17/20 08:11 PM
Joined: Feb 2015
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t1snwrbrdr12 Offline OP
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Joined: Feb 2015
Posts: 162
2011 sienna 2grfe 3.5 v6.

I was under it to drain the antifreeze and at the rear of the engine, center of the cylinder head where it meets the block, there was a bit smaller than a golf ball size dried up crusted up glob of antifreeze. I saw no trail leading there, although I do work on it in my driveway so it’s a bit harder to get a good inspection.

I ran out of time after bleeding it (kicked my butt getting the air out of it). Kids home from school due to Coronavirus so I didn’t get a pressure tester on it to watch for active leaks. I cleaned the crust and plan on monitoring it.

I never needed to top off coolant. I’ve never smelled it. I’ve never seen it drip. But it’s obviously leaked at some point.

Anyone know of anything that leaks and leads to that area? Someone familiar with this engine may know. It’s kind of a mess under the hood so just looking for anyone familiar to see if I need to look anywhere in particular.

Is this a common issue on 2grfe?

I follow a Toyota tech on Instagram and he’s done some head gasket in the short time I’ve followed him, along with a few coolant crossover pipes. A head gasket would likely drive me to get rid of this van if it got so bad it requires repair. It’s not something I could easily do in my driveway.

Thanks for any insight.

Re: Toyota techs here? 2grfe head gasket? [Re: t1snwrbrdr12] #5379006 03/17/20 08:14 PM
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Chris142 Online Content
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If it's not big enough to cause a problem leave it. Maybe add a couple of seal tabs.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Toyota techs here? 2grfe head gasket? [Re: t1snwrbrdr12] #5379198 03/18/20 04:00 AM
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Olas Offline
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Cable ties should hold it
Re: Toyota techs here? 2grfe head gasket? [Re: t1snwrbrdr12] #5379223 03/18/20 05:33 AM
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Slick17601 Online Content
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Add a bottle of K Seal.


2018 RAM Bighorn 5.7
2008 Toyota Sienna 3.5
Re: Toyota techs here? 2grfe head gasket? [Re: t1snwrbrdr12] #5379254 03/18/20 06:51 AM
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diyjake Offline
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OP - how many miles do you have on the van? I thought these engines where solid, never heard of head gasket issues before.

Re: Toyota techs here? 2grfe head gasket? [Re: t1snwrbrdr12] #5379280 03/18/20 07:29 AM
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Posts: 162
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t1snwrbrdr12 Offline OP
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130-140some thousand.

It’s leaking right out of the center of the head but down the back of the block, not into the valley. Unless I didn’t see a clear trail (hopeful) and it was just collecting there from another minor leak elsewhere. I need to get pressure on it and monitor it when I have time to really uncover things and thoroughly inspect. It’s just a mess under hood so figured someone may know right where to look.

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