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I’m not recommending anything but the army still uses 15w40 in the older ones and dexron 6 in the new ones

If you’re cab air ride isn’t working the cab can come in contact with the engine. Look for rub marks near the rear of the engine or underside of the cab

I see a lot of starter problems on the older trucks. The starter solenoids go bad often. Have someone hold the button down and tap on the solenoid. Also have seen water get inside and rust them up and cause intermittent problems. On a side note, I have seen several with loose bolts holding the...

The 2 hoses on the front axle are the breather and the front axle air lock. The breather is tied to the rear cab mount cross member. The rear breather is on the front side of the rear frame cross member. The CTIS hoses are behind the backing plate

There’s not much you can do but cage them. 1088 is easier to just chock wheels, release brakes and tap the shoes with a long bar and hammer. I’ve been working on them since 1998