Quote:
Originally Posted by DennisJGray
Tow Vehicle update... 2020 Toyota 4Runner, with WDM and 21 NE.
Temp never went over 198. It was only there for about five minutes after the longest upward haul. Normally it runs at 186 degrees.
Wanapum Campground. We will be back.
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Suspect that you're talking here about engine coolant temps - way too low to have been transmission temps. Our old 4Runner's happy place for engine coolant is 193 degrees - seldom varies. But beware of heat soak - not just for 4Runners. Last June we were heading up 89A from the east to Jacobs Lake Junction, ambient temp about 102 degrees, stuck behind a big slow truck. Kept the ratios low and the revs up and the tranny pretty cool, but the coolant slowly headed up to about 200 degrees. Slid in to the parking lot, waited a bit, and turned the engine off - it gradually heat soaked up to 210 degrees and I started feeling faint - visions of fried head gaskets - so started the engine back up to cooler 'er back down.
You might want to have a look at this 4Runner thread:
https://www.escapeforum.org/forums/f...cle-20057.html
Post #7 has links to more 4Runner stuff.
And "Amen" to Wanapum!