Replacing Thermostat
#1
Replacing Thermostat
How much coolant should I drain before I remove the thermostat?
Thanks
Sorry forgot to mention this is on a 3.0
Thanks
Sorry forgot to mention this is on a 3.0
Last edited by caboverpete; 06-22-2007 at 03:31 AM.
#3
Contributing Member
Well the t-stat is pretty low in the cooling system, I always just drain it all. I don't find it any harder to drain it all vs draining half. I use a large clean 2 gal container and a funnel with a hose on it right up near the drain point. Then going back in I filter the coolant through a little K&N prefilter just in case there was any small particles in it.
#4
Contributing Member
I just happen to be draining my coolant yesterday so here's some pics of what I was trying to decribe above:
BTW as you are refilling if you pull one of the high coolant lines (like the one going through the throttle body) it lets a lot of the trapped air out of the system:
BTW as you are refilling if you pull one of the high coolant lines (like the one going through the throttle body) it lets a lot of the trapped air out of the system:
Last edited by mt_goat; 06-23-2007 at 06:10 AM.
#6
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Join Date: Jun 2007
Location: Rancho Cucamonga, CA
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If the coolant is over a year old, replace it. If it's discolored replace it. If you live in a hot climate and it's over six months old, replace it. Even factory Toyota coolant is less than $20 for a gallon. It's important maintenece that most ppl skip, heat cycles turn it acidic, plus Toyota was kind enough (not) to pair a brass radiator with an engine that has aluminum heads. Aluminum and brass are reactive to each other, this causes accelerated acid formation. And we wonder why the 3.0's have head gasket issues.
Last edited by SoCalWheeler71; 06-23-2007 at 07:31 AM.
#7
Contributing Member
Good points, BTW there is an aluminum core radiator avaliable now for the 3.0 trucks. I just installed one from Summit:
https://www.yotatech.com/forums/show...&postcount=514
https://www.yotatech.com/forums/show...&postcount=514
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#8
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Yeah, I was lucky enough to score my runner used with an alloy rad already in it. FYI on aluminum, it radiates heat into the air much better than brass, something like 3 times as much. Thats why aftermarket alloy rads are usually 1 or 2 cores only, even in four core applications.
Last edited by SoCalWheeler71; 06-23-2007 at 12:17 PM.
#9
Hey mt goat, how much was the Evans Non-Aqueous Post Drain Prep Fluid? And is it for aluminum only?
Last question, is that the NPG+? Looks alot like water, does it smell or somethin'? I just never seen clear coolant, but I ain't looked for it either so maybe I's naive.
Last question, is that the NPG+? Looks alot like water, does it smell or somethin'? I just never seen clear coolant, but I ain't looked for it either so maybe I's naive.
#10
Contributing Member
https://www.yotatech.com/forums/f123/evans-npg-waterless-coolant-114994/
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