1. Safety First: Ensure the van is parked on a level surface and the engine is completely cool. Hot oil can cause serious burns.
2. Locate the Dipstick: Open the hood. The dipstick is usually yellow, and is located near the engine. It might have a ring or a symbol that looks like an oil can. It's often easier to locate with the engine bay relatively clean. Your owner's manual will show you exactly where it is.
3. Remove and Wipe: Carefully pull out the dipstick and thoroughly wipe it clean with a lint-free cloth or paper towel.
4. Reinsert and Remove Again: Reinsert the dipstick fully back into its tube. Then, remove it again.
5. Check the Oil Level: The dipstick will have markings indicating the minimum and maximum oil levels. The oil level should be somewhere between these marks; ideally, closer to the "full" mark.
6. Interpret the Reading: If the oil level is low, you need to add oil. If it's at or near the maximum, you're good. If it's very low, or if the oil is very dark and dirty, it's time for an oil change.
7. Add Oil (if necessary): If you need to add oil, use the correct type and grade of oil specified in your owner's manual. Do this slowly, checking the dipstick frequently to avoid overfilling. Overfilling is as bad as underfilling.
8. Consult Your Owner's Manual: The most accurate and detailed instructions are always in your owner's manual. It will specifically show you where the dipstick is located for your exact model and engine.
Important Note: If you're uncomfortable checking your oil yourself, or if you're unsure about anything, it's always best to take your van to a qualified mechanic.