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Neither of my JLs will crank unless the brake pedal is depressed. (JL normal start interlock)

I take your point, but still think the engines are "engineered" for the fluids they recommend by the pump tolerances, gear ratio they are driven at, piston squirter orifice size, bearing clearances,etc. All these adjustments can be made without us knowing the details. I like getting better gas...

No, manual says to use OAT MS-90032. (Organic Additive Technology:))

Don’t think there is anything wrong with Amsoil but I have ’20 JL 3.6 with over 146K miles. Used nothing but Penz 0w20 and Mobil 1 0-20 and zero problems. Changed way too often and never loaded the motor very much until it was thoroughly warmed up. Remember first number (0) in 0w-20 is the...

definitely worth it, best lighting I have had on any vehicle.

I don't think putting in a bottle of Red Line Water Wetter would hurt. I've used this in high performance and other vehicles that ran on the hot side and it seemed to help. It wouldn't cover for a bad water pump or or restricted flow though.

Sorry for the misunderstanding and I appreciate your informed dialog. If that center disc is heating up when clutch is depressed, idling in gear while stopped, the driver should observe the drag and the jeep creeping forward if this drag is enough to do damage. I've experienced single disc...

Yeah, it takes patience and discipline, I could never have done this as a young man. Also helps not to have lift, oversize tires and non aerodynamic accessories hanging on it. I don't believe and XR would do this. Ya also have to put up with a line of impatient drivers behind looking to pass.

Are you saying that even in low range, low gear you still needed to brake hard enough to put enough heat in them to nearly fade to useless? No matter what the brakes you might put on your jeep, if they cannot dissipate heat at least at the rate they are heating from braking they will burned up.

On a 390 mile trip up the McKenzie over old highway 242, on to Sisters, Bend, down to Crescent and back home on Willamette Pass (Hwy 58) the 392 got 22.1 Mpg. This was done by setting the cruise at 55mph and never stomping the gas.

That's even worse! Jeep has gone to the trouble of putting a dual disk clutch to help prevent slipping and people are still burning them up. Are you claiming that the sandwiched disk heats up during normal driving with the clutch fully engaged? This is further evidence that a hell of a lot of...

Yeah, higher compression ratios make more power. High octane gives you the ability to run without detonation. There is no more energy in a gallon of race gas than a gallon of regular. That myth is wide spread.

Watch this to understand octane and what it might do for you.

My 3.6 and 392 both are limited to 100mph. 'Course I'd never drive that fast. ;)

I'm not saying there is no issue with the clutch design. Stick shifts are not going to be offered on any new vehicles if the buyers do not understand their vehicles. For Jeep it is damned if they do and damned if they don't. If they make a stiff clutch people will complain, if they make clutch...

Gears are really hard to shift when torque is applied through them, even a small amount. After coming out of the present gear engaged, the dogs may need to turn slightly to let them engage. 2H to 4H is most easily done when rolling as no disengaging is taking place, only the dogs in the xfer...

Oiled elements are not good for downstream sensors. The stock filter is a good filter.

When it goes hydrodynamic means when there is no metal to metal contact, ie There is an oil cushion between the rollers and pins and between the rollers and sprocket. Because of the small points of contact, going hydrodynamic takes a lot more speed. The main and rod bearing journals are big...

Any driver of a vehicle with a stick shift and clutch should know when their clutch is slipping. The only time the clutch generates heat is when it is slipping. If you can't tell if your clutch is slipping you shouldn't be driving a stick.

Evidently, I have a Unicorn Jeep; ’20 JLR with 141,720 miles. No ticking no broken filter housing, no rear seal leaks, nothing. I have read so many posts about how the 2.0 is so peppy and fun that I have gone to dealers and test drove three times and seat of the pants told me that my 3.6 easily...