Is 90-100 deg too hot?
My 1984 300SD typically runs between 90 and 100 deg, but often right at 100 deg C. I've seen the needle jump occasionally, and when it does, it drops perhaps 5 degrees. This makes me suspect a slightly intermittent electrical contact somewhere. My coolant level is fine, at least in the overflow reservoir. Should I be concerned? I'm not worried, at least not yet; this car has been very reliable. I just don't want to smoke the head or anything.
Lehigh Valley PA USA
73 Olds 88, 72 MB 280SE, 78 Datsun 280Z, 71 T-Bird, 72 Olds 88, 83 Nissan Sentra, 85 Sentra, 73 230.6, 91 Integra, 83 300SD, 91 Volvo 940GLE wagon, 84 300SD, 95 Subaru Legacy L wagon, 02 Mountaineer, 91 300TE, 08 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon all gone... currently
2007 Honda Odyssey Touring, 2011 Honda Odyssey Touring