* Automatic Transmission: The dipstick and fill location are usually on the transmission itself, often near the back, but sometimes on the side. It's a tube-like dipstick with markings for the fluid level. Look for it near the transmission; it will often have a bright coloured handle or marking on it.
* Manual Transmission: Manual transmissions generally don't have a dipstick. The fluid level is checked and added through a fill plug, typically located on the side of the transmission case. You'll need a shop manual or a reliable online resource specific to your van's transmission type to locate it.
To find the correct location:
1. Consult your owner's manual: This is the best resource. It will show diagrams and pinpoint the location for your specific van's transmission type.
2. Use a repair manual: A Haynes or Chilton repair manual for your specific year and model will provide detailed diagrams and instructions.
3. Search online: Use a search engine with terms like "1990 Dodge Ram Van B150 transmission fluid fill location [automatic/manual]" to find relevant images and discussions from online forums.
Important Note: Be extremely cautious when working under your vehicle. Use jack stands and never rely solely on a jack. If you are not comfortable working on your vehicle, take it to a qualified mechanic. Incorrect transmission fluid levels can severely damage the transmission.
