OIL LEVEL CHECK
See Figures 1, 2, 3 and 4
Check the engine oil level every time you fill the gas tank. The oil level should be above the ADD mark and not above the FULL mark on the dipstick. Make sure that the dipstick is inserted into the crankcase as far as possible and that the vehicle is resting on level ground. Also, allow a few minutes after turning off the engine for the oil to drain into the pan or an inaccurate reading will result.
- Open the hood and remove the engine oil dipstick.
- Wipe the dipstick with a clean, lint-free rag and reinsert it. Be sure to insert it all the way.
- Pull out the dipstick and note the oil level. It should be between the SAFE (MAX) mark and the ADD (MIN) mark.
- If the level is below the lower mark, replace the dipstick and add fresh oil to bring the level within the proper range. Do not overfill.
- Recheck the oil level and close the hood.
Use a multi-grade oil with API classification SF.
OIL & FILTER CHANGE
See Figures 5, 6, 7, 8, 9, 10 and 11
The engine oil and oil filter should be changed at the same time, at the recommended intervals on the maintenance schedule chart.
You should have available a container to hold a minimum of 7 quarts of oil; 9 for the diesel!
The oil should be changed more frequently if the vehicle is being operated in very dusty areas. Before draining the oil, make sure that the engine is at operating temperature. Hot oil will hold more impurities in suspension and will flow better, allowing the removal of more oil and dirt.
Loosen the drain plug with a wrench, then, unscrew the plug with your fingers, using a rag to shield your fingers from the heat. Push in on the plug as you unscrew it so you can feel when all of the screw threads are out of the hole. You can then remove the plug quickly with the minimum amount of oil running down your arm and you will also have the plug in your hand and not in the bottom of a pan of hot oil. Drain the oil into a suitable receptacle. Be careful of the oil. If it is at operating temperatures it is hot enough to burn you.
For longest engine life, the oil filter should be changed every time the oil is changed.
Cartridge Type Filter
Some early models were equipped with a cartridge type filter located in a canister on the side of the engine.To replace the filter element:
- Place a drain pan under the filter housing.
- Remove the filter housing bolt and lower the housing containing the cartridge.
- Remove the cartridge from the housing and dispose it.
There are springs and washers located on the bolt. Be careful to avoid losing them.
- Insert the new cartridge in the housing. It's a good idea to replace the housing O-ring or gasket.
- Position the housing on the base and install the mounting bolt.
- Fill the crankcase, start the engine, let it idle for a few minutes, shut it off and recheck the oil level.
Spin-On Type Filter
To remove the filter, you may need an oil filter wrench since the filter may have been fitted too tightly and the heat from the engine may have made it even tighter. A filter wrench can be obtained at an auto parts store and is well worth the investment, since it will save you a lot of grief. Loosen the filter with the filter wrench. With a rag wrapped around the filter, unscrew the filter from the boss on the side of the engine. Be careful of hot oil that will run down the side of the filter.
The diesel has 2 oil filters. Change both at the same time.
Make sure that you have a pan under the filter before you start to remove it from the engine; should some of the hot oil happen to get on you, you will have a place to dump the filter in a hurry. Wipe the base of the mounting boss with a clean, dry cloth. When you install the new filter, smear a small amount of oil on the gasket with your finger, just enough to coat the entire surface, where it comes in contact with the mounting plate. When you tighten the filter, rotate if only a half turn after it comes in contact with the mounting boss.