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You can place a resistor in parallel with the LED dummy light.

The EPDM (Gates Safety Stripe)hoses are sensitive to damage from oil exposure so if you have a leaky engine silicone will be a better option. Otherwise, they'll both provide long life at vastly different price points. One interesting note about silicone hoses is that they are permeable. Water...

Fram uses cellulose fiber (I won't say cardboard) end caps for their filters. This creates the perception of cheap. Is it a problem? I don't know, the filter media is cellulose as well so why would there be a problem having cellulose ends?

Have you considered offsetting the front axle forward? I did the ORD zero rate and was able to fit 37 inch tires with only minor trimming of the front of the fender.

If you cut open filters to check engine condition you'll quickly become a fan of Wix. My wife used to take her Toyota Corolla in for service before I met her. The shop used Champ brand filters. Made in USA. I did a cut. It has a Parker anti-drainback valve. it was nitrile rubber and rock hard...

The atomic components of the additives don't go away. If you have 3000 ppm zinc from ZDDP you will still have 3000 ppm zinc as the ZDDP molecules break down. The only way these numbers change is by dilution, usually from mixing brands with different packages. For example, Chevron' Delo SDE uses...

The IRFT test typically requires two samples (new and old) to be run and costs around $400 for each test. You can test for zinc and phosphate individually but you can't determine if the are still in the ZDDP molecule or have been sheared out without doing IRFT If you see high iron and lead that...

We should all understand the shortcomings of oil analysis before putting much faith in it. It's great for defecting fuel in oil. You can test for this without a lab (inclined plate test). You can detect water in oil with a spoon and a lighter. Wear particles means the failure has already...

If you know anyone that does refrigeration work they should be able to braze that up.

This one is important. I forgot to connect it after R/R'ing a head and the engine used the steel lines between brake master cylinder and proportioning valve as the ground. They started smoking while glow plugging.

If the pack gets depleted and it's time to go what do you prioritize? Recharging the pack or low performance skedaddling?

Why? The HMMWV spends most of its life idling so it won't benefit from dynamic braking in a hybrid drivetrain.

If you do remove the manifold to get to it the lines come off in pairs. Do not loosen the support clamps on the lines. If you remove in pairs you will not require any special wrenches.

Do be aware that because you have added gasoline to your fuel you need to treat it as such. Used motor oil is fine to feed into a diesel engine provided it is filtered, dry, and diluted enough to have the correct viscosity. Vegetable oils are more challenging. They have alkanes in them which...

Napa sells both types of coolant. If you chose to go with an antique coolant you need to get strips that test for nitrites. If you chose to go with a modern coolant you need to use strips that test for carboxylates. Carboxylates don't deplete over time so testing is generally unimportant with...

Various companies make coolant test strips. Fleetguard comes to mind. Yes, you are supposed to add additional SCA every 300 hours and replace the coolant every 3000 hours or 3 years. Changing coolant filters replaces periodic dosing as the filters have additional SCA in them.

SCA is the concentrate. It stands for Supplemental Coolant Additive. Caterpillar sells it, they simply call it SCA. Nalcool 2000 is another brand. For smaller quantities (<5gal) Pencool 2000 is probably easiest to find.

That's nasty. I would suggest doing a proper acid flush when you can. The cloudiness of the coolant doesn't affect it's performance. Coolant corrosion inhibitors are film forming type and can't form films under rust. Remember that SCA levels are minimums. It's not possible for them to be too...

Only one Fleetguard coolant is "conventional" https://cms.fleetguard.com/en_NA/literature/which-fleetguard-coolant-product-right-you/lt36237 The rest are OAT long life coolants. Defcon, corrosion is any rust on the surface of the cooling passages. If the block is clean the corrosion...

Is there corrosion in your cooling system? Coolants can't protect corroded surfaces from further corrosion. Water flushing doesn't really do anything. If your system is oil contaminated you need to do a detergent wash. If it's corroded you need to do an acid wash. If it's oil contaminated and...