Quote:
Originally Posted by Colorado220
I love the car, have had it 11 years now. I just want to get a little more from it. Going slow is not an issue as much as I would like better MPG's
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That mileage problem comes from the low cetane excuse that's being sold as road diesel nowadays. When your car was built, the average cetane of pump diesel was about 48 to 50. Today, you're lucky to get anything close to 40...basically, 17% less energy per gallon.
I would make sure the engine is to spec...valves adjusted, etc. Use synthetic lubricants and add a cetane booster like Power Service or Stanadyne cetane additive to your fuel at each fill-up.