1990 Nissan D21 Manual Transmission Fluid Capacity: A Comprehensive Guide

1990 Nissan D21 Manual Transmission Fluid Capacity

When it comes to maintaining your 1990 Nissan D21 with a manual transmission, one crucial task is ensuring that the transmission fluid is at the right level. In this article, we will dive into the details of the transmission fluid capacity for your Nissan D21, so you can keep your truck running smoothly and efficiently.

Transmission Fluid Capacity and Type

Before we get into the nitty-gritty, let’s start with the basics. The transmission fluid capacity for a 1990 Nissan D21 with a manual transmission is approximately 3.7 quarts or 3.5 liters. It’s important to note that this capacity may vary slightly depending on the specific model and any modifications made to the vehicle.

Now, let’s talk about the type of transmission fluid you should use. For your 1990 Nissan D21, it is recommended to use a high-quality manual transmission fluid that meets or exceeds the API GL-4 specification. This specification ensures that the fluid provides the necessary lubrication and protection for your transmission.

How to Check and Add Transmission Fluid

Checking and adding transmission fluid to your 1990 Nissan D21 is a relatively simple process. Here’s a step-by-step guide to help you get the job done:

  1. Make sure your truck is parked on a level surface and the engine is turned off.
  2. Locate the transmission fluid dipstick, which is typically labeled and located near the back of the engine bay.
  3. Remove the dipstick and wipe it clean with a lint-free cloth or paper towel.
  4. Reinsert the dipstick fully into the transmission and then remove it again.
  5. Check the fluid level indicated on the dipstick. It should be within the “Full” and “Add” marks.
  6. If the fluid level is below the “Add” mark, you will need to add more transmission fluid.
  7. Using a funnel, carefully pour the recommended transmission fluid into the dipstick tube. Take your time to avoid overfilling.
  8. Recheck the fluid level using the dipstick and add more fluid if necessary.
  9. Once the fluid level is at the appropriate range, securely reinsert the dipstick.

Remember to always refer to your vehicle’s owner’s manual for specific instructions and safety precautions when working with transmission fluid.


Now that you have a better understanding of the transmission fluid capacity for your 1990 Nissan D21 with a manual transmission, you can confidently maintain your truck’s performance. Remember to use the recommended fluid type and follow the proper steps to check and add transmission fluid. By taking care of this essential maintenance task, you can ensure that your Nissan D21 continues to run smoothly for years to come.

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