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If you run it without a thermostat watch your temperature. Most heavy duty engines require a thermostat in order to get water to circulate through the radiator.

Use phosphoric acid to flush. It's safer for the engine. You can purchase it as concrete and metal etch at your local hardware store.

M1008? That's the death wobble. The Dana 60 axles are especially prone to it. Kingpins and bushings are worn out. Drop your tire pressure to 30 psi or less and it will go away. This is a test, not a solution.

Good engines will have good compression regardless of temperature. Testing warm is more of a salesman gimmick to convince you to buy a weak engine. Especially in the case of a diesel engine good compression is most important when the engine is cold. Lower cranking speeds due to injectors in the...

The 97+ 6.5 engines had piston cooling jets which is why they required the higher volume pump. I can't say this with confidence but I believe the 93-96 engines had the same pumps as the 6.2 and had turbos too .

Pipe tape is for tapered threads only. You should use the injector washer on the adapter to head. I can't tell what thread you have to mate your gauge to the adapter. It's bottomed out which should never be the case for a tapered thread.

Quality requires specification OR pedigree. Pedigree makes specification easy but can't be relied on forever. Apple engineers were very good at specification to get quality out of their Chinese made phones for example. With that said, we're working with aftermarket parts here. They don't have...

On the subject of glow plugs swelling, for the civy trucks most know not to run the Autolite plugs. They always swell. There are certainly design characteristics that do cause swelling. And don't go calling glow plugs low tech insignificant items. The materials required to make a reliable glow...

If you have a junk glow plug that failed and you keep replacing it with junk glow plugs and they keep failing have you ever considered that it may be the junk glow plugs that are the problem? If you don't want to buy a full set at least put a good plug (Delphi?) in that hole and see if the...

Do like Mercedes and put the batteries in a box somewhere behind the rear seat. Take advantage of your 24V and save a bunch on money on battery cables because you can run a smaller gauge than 12V.

I just rebuilt the front calipers on my M1008. They had a waterline just below the midpoint, they were nearly half full of water. Luckily the bores are hard chromed and the pistons are stainless steel so corrosion was minimal. I put DOT 5 back in because I didn't really want to get into the rear...

Your oil pressure probably is low. It would be wise to check it. If the oil pressure is low, you may consider dropping the pan and rolling in new bearing inserts. If you can tolerate downtime, plastigauge each bearing and mix and match standard inserts with undersized to get the correct...

What is your oil pressure at hot idle?

If you can get all of the old fluid out you can convert to standard fluids.

In the world of low quality appliances, the power rating is often based on the inrush current or starting power which is typically 4x the running power. Small cables like that can tolerate a 90 amp inrush while the running current would only be 22.5 amps which is acceptable for 14-12 gauge...

90 amps at 12 volts is 1.4 horsepower. I don't see where it says 90 amps? 9 amps is more likely.

The head gaskets tear up the top deck of the block. Maybe replacing it will help prevent the damage. The newest head gaskets have some reinforcement near the water passages on the ends where they are most likely to let go. Then again, you may open a can of worms.

I tried to reseal one once. It started and ran but never ran right. It's certainly possible and I do consider myself a very adept mechanic but I must have gotten something timed wrong and have no way to figure out what now that I have done it. It is usually the throttle shaft seal that goes bad...

Hood can stay on. Batteries come out as well as fuel filter. Head weighs 65lbs, manifold is maybe another 10lbs. One bolt on driver's side head is challenging to get the torque wrench on because it is very close to brake booster supports.

You can pull the heads with the manifolds attached. It's probably a good time to do head gaskets anyways.