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  1. S

    Cycling Temperature

    I have the same problem with a wandering gauge. I have literally replace everthing to do with cooling and some things 2X. I also noticed when the gauge goes up, so does the engine RPM. I checked the coolant temp and it varies very little so the coolant does not heat up. I am having the gauge...
  2. S

    what oil to use?

    The keys on oil are to use synthetic and a Mobil 1 or K&N filter. Both filter down to 10-20 microns. It will take about 3-3000 mile changes before all the junk will be filtered out of the engine. Synthetic oils are heavy on detergents and don't leave sludge. My last oil change was at a 6000...
  3. S

    Overheating 91XLT

    I live in Phoenix and when the weather began to heat up I turned on the A/C and the gauge shot to the "L". When I turned off the A/C it cooled right down. Since that time I have changed 3 thermostats, one fan clutch, one temp sensor, one radiator, one water pump and two radiator caps. I use a...
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