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If they are the correct wheel locks for your truck you should be able to torque them to the same torque as the other nuts.
If memory serves me, it’s been a while since i worked on one there should be a small plastic tube that runs from the top rear of the valve cover to a fitting on the intake manifold. Oil is a hydrocarbon when it’s burned and if the numbers coming out the tail pipe are under the limit set by the government and there is no visible smoke it will pass smog. The catalytic converter must be working well.
Everyone is different but at the end of the bad week I try to get a good nights sleep. After that i try to do something that i really enjoy. I think about the good and positive things in life and forget about the bad. Hopefully you learned something from the things that went wrong to help prevent the same frustrations from happening again. You have to be tough to repair cars for a living and don’t take it personally.
No matter what happened you still have your health and hopefully most of your sanity. Try to start the next week with a good attitude.Be sure the tubing for the crankcase ventilation system isn’t plugged. Remove all of it and blow through it to make sure it’s not restricted as well as the fittings it connects to. Return to conventional oil 10w30 or 10w40. If that Jeep was under warranty and lower mileage Chrysler would tell you that a quart in 1000 miles is normal.
Something you can do quickly is disconnect the high pressure cut out switch on the A/C discharge line ( smaller of the 2 lines) to see if the fan shuts down. The switch could be telling the PCM that the system is under high pressure and commanding the fan all the time if it’s faulty.
If the Holden engine is similar to some other GM engines it’s likely that the intake manifold gasket is leaking. As the engine cools it sucks oil from around the gasket leak into the cooling system.
I have done several intake gaskets on the 3.1 and never once put any sealer on the bolts. I think if you check the GM service info it doesn’t specify any sealer.
If that engine is maintained properly it should last at least 300 000 mi. I have seen them. Anything could have caused the engine to fail and I suspect the dealer had something to do with it but proving it could be impossible. Because of the year of the car I would look up a good low mileage engine from salvage and have someone reputable install it.
It’s really hard to say what caused the problem. Maybe the timing belt broke. I think Toyota builds some of the best engines in the world but the 2.2 isn’t one of them in my opinion. I have seen lots of them with rod holes in the block and have replaced a few over the years..
Techron is an additive that I think most major oil companies add to their gasoline to keep your fuel system and valves clean. By adding it to your fuel I suppose it will make the cleaning action a little more concentrated. To me the very best products that I know of are B.G. chemicals but you would have to search for a shop who sells them and has the equipment to apply them correctly. As far as the engine oil goes if you change your oil as recommended or even a bit sooner than recommended with a good quality synthetic you should be fine. The color of the oil doesn’t always mean you have a dirty engine inside. It means the oil is doing it’s job. Also have the PCV system checked to make sure it’s operating properly. Hybrids sometimes have a problem in that area.