eot and ect
Laughing Gas
Joined: Oct 2012
Posts: 1,202
Likes: 1
From: Frederick MD
My temps go up when pulling. Especially the mountains. But my spreads still stay with in 7 to 9. They Usually run in the upper 190s when pulling flat. My normal spread with out pulling is only 1 or 2 difference
Token Redneck
Joined: Jun 2007
Posts: 9,337
Likes: 346
From: Breckenridge, TX
Once you're fully warmed up, EOT will be slower chasing ECT down, especially if you start coasting down a hill. I wouldn't worry about "spot checking" your split, look at where it averages when you're not climbing hills and coasting down them. It's not a pass/fail critical fault type deal where the engine blows up if you hit 15*, it's an aggregate failure that builds up over time, and you're looking for variances from your normal to indicate the cooler is clogging.
Posting Guru
Joined: Jun 2012
Posts: 1,171
Likes: 2
yes, there can be as much as a 20 degree difference in a health engine. Very dependant on the load, the speed and the terrain. As noted it's common to have a big difference when you crest a hill and coast down the other side. Coolant drops very quickly with the fan on and no load, and oil follows about 3 - 5 minutes later.
Brian
Brian
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