Quote:
Originally Posted by Whiskeydan
Impressive. Is this with a 2.88 or 3.07 diff?
Back in '85 I had a 'fresh' '83 SD that routinely did 32mpg. The current '85 does maybe 30 mpg and the '84 with the 3.07 does around 27 mpg. Tired vehicles and fuel changes most likely...
BTW, does your SD always run that hot?
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This is the 2.88.
I've done well with the Power Service and the speed limit of 62mph for most driving.
The temperature gauge, I'm quite convinced, suffers from a fluctuating sending unit. Sometimes it runs right at 90°C...........sometimes it climbs to 105°C. The infrared gun always shows a maximum of 93°C at cylinder #5.
I've got a new sending unit. Hopefully, that cures it. A new clutch fan, radiator, thermostat and relatively new water pump certainly made no difference.