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95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

Can I drive 90 miles with radiator cap loose or off ?

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Old 10-06-2010, 04:08 PM
  #21  
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Originally Posted by mt_goat
I've been running waterless coolant for the last 3-4 years in my truck. There are lots of references for the BP of coolant by googling. He would have to work pretty hard to get to 100% antifreeze anyway. Yeah 80-90% would probably work fine.
Yeah, sure, but the waterless formulation does not have the specific heat and viscosity issues that you get with 100% ethylene glycol. It doesn't matter anyway, it appears, but I was enjoying analyzing the problem. I did Google the BP of coolant by concentration; I figured 246°F was good enough.

Am I wrong about the risk of going dry with the super high BP, though? Is the lack of warning by NOT boiling perceived as a problem at all by the waterless crowd? Do people beef up their temp measurement from the stock dash gauges? I sure would. Thanks. Sorry to hijack a little bit, but it's sort of relevant, too.

I guess we both agree that raising the concentration is a good idea for BBMcF.

Last edited by TheDurk; 10-06-2010 at 04:24 PM.
Old 10-07-2010, 08:04 PM
  #22  
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Originally Posted by Teuf
QUESTION>>>>>>>>>>>>>> Why can't you take out your own radiator?

I wouldn't drive 88 seconds like that, that pushing it.
I've driven around 50 miles with no cap, thats because i busted my radiator on the trail and it cracked when we fixed it to at least hold water. I had a scan gauge and was watching the temperature like a hawk, and had to fill it up once on the way home. We fixed it that night. Changing the radiator takes like 30 minutes to do.
Old 10-07-2010, 08:27 PM
  #23  
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Why not flatbed the runner to the shop and give the bill to the shop???

I wouldn't do anything else if i were in your position. There is zero upside for you risking YOUR vehicle to get it replaced by SOMEONE ELSE who could really care less about it and if it'll run for another 10 years.

Worst case, take the rad out and mail it to them. 90 miles is no walk in the park (not to mention the gas to get there and back) which is, what, $25?

After they fix it, don't go back there. Their "professional advice" is anything but!
Old 10-10-2010, 01:47 PM
  #24  
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ok

since I do drive by the shop in my other car almost every weekend, I did pick up a
new rad, and just swapped it myself now. was not a big deal.

1) remove plastic grille

2) remove upper rad hose and overflow

3) remove fan shroud

4) drain rad, remove atf lines

5) swap rad

6) install new one.

took 1 hour in my driveway and I was being lazy

I will dump off the old radiator and should be all set

the failure on the old rad was the crimps along the seam at the bottom
didn't seem complete. must have been the machine pressing the part together
just was worn out or needed adjustment, and my rad slipped through
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