I just noticed that the tire shop set my pressures to 28psi, but the sidewall spec is 44psi cold. I increased my cold pressure to maximum and drove an entire tank of fuel through the car, keeping the engine rpm's consistently under 3000rpm.

The result??? 450 miles on 15.5 gallons (29 mpg) more than this car has ever recorded. If driving slower and keeping rpm under 3000 affords a 4mpg increase, I think a rear axle change would be worthwhile...Robert

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership