Tobst:

Fully compatible with Mercon/Dextron III, it's going to work exactly the same. May have some seal swelling additive to counteract the swelling/wear effect of dino oils on rubber seals -- they swell in dino oil and wear some, then shrink and leak when the dino oil leaches back out in synthetic oil -- new seals don't do this.

Tomguy:

The mechanical advance is under the point plate, accessed by removing the distributor and driving the retainer pin out of the drive gear. The entire guts of the dizzy then comes out of the top. Remove trigger points FIRST or you will ruin them. Mechanical advance is a set of weights and springs that move the rotor clockwise in relation to the distrirbutor shaft. Usual problem is dirty pivots for the weights, or wear on the bushings there so they wn't fall back. The two parts of the shaft acan get drity, too, or have old oil varnish in there, so that the rotor end won't rotate freely.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!