The D100 probably has the 3 speed standard transmission. If so, it doesn't use gear oil in the transmission. It uses Dextron II or III. The fill plug is found on the side of the transmission about half way up.
Assuming that the standard transmission in that 88 D100 is a three speed, it uses Dextron II or III. It doesn't use gear oil. The fill plug is on the side of the transmission about half way up.
Dextron 2
Should be an A727 tranny. I have an 1989 Dodge D100 3.9 v6 and the transmission in it is an 904 a lighter version of the 727.
Facing the front of the truck, it is located on the intake manifold on the right side of the carb.
The firing order for a 1988 318 is: Right side: 1-3-5-7. Left side: 2-4-6-8. This is as viewed from the front of the truck.
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torque flight 727
There is none.
its under the steering column
Timing on this truck is at top dead center for both manual and automatic transmissions. If it is an original California truck with all the smog devises time it at 4 degrees before top dead center.
7700
probably not.
22 or 30