500,000 mile motor oil?

This is the Mobil 1 Warranty: https://nudl.es/m1-oil-warranty
This is the Pennzoil Warranty: https://nudl.es/penz-oil-warranty
This is the Quaker State Warranty: https://nudl.es/qs-oil-warranty

The Pennzoil and Quaker State warranties are hands down better than what Mobil offers. The Pennzoil warranty is the easiest to navigate, with Quaker State being very similar. Mobil's warranty is the most ambiguous. They make it pretty clear that unless eight planets align in the solar system on February 30th, the year of the claim, you, as a customer, are SOL. I may be a Mobil 1 fanboy, but their warranty sucks.
Mobil 1 is the only one of the three you listed that doesn’t have an exclusion for vehicles over 10k lbs GVWR (many modern 3/4 ton trucks are over 10,000 GVWR). I have been using QSFS in my current truck, understanding that there’s no warranty coverage from the oil company. My next truck will likely live on a steady diet of Mobil 1.
 
The amount of things that you will need to ever have a valid claim render these things useless. Beyond that, what specifically is covered? Basically the block/pistons only and no labor etc. etc. etc. Gimmicky.
 
This warranty applies to the lubricity of the oil and any damage to the engine that is attributable to the motor oil.

Given that these brands and dozens of others already pass API standards specific to your vehicle, the chance of you ever being able to use this engine warranty is nil.

Or to put it mathematically...

The right oils + A high quality oil filter + changing your air filter x (hoses, belts, sensors, modules, suspension components, brakes and mouldings) to the power of all remaining fluids (power steering, brake, transmission, differential) +++ driving conservatively and defensively - rust, potholes, and neglect, and divided by a neverending stockpile of factory parts = My 31 year old Camry.

(Rounded to the nearest level of Mileage Impossible)
 
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^ KBB trade-in values for 20 year cars is roughly equal to a used no-name Chinese scooter.
Gimmicks sell products. People don't bother reading the fine print. All they see is the "Warranty Seal" and instantly feel better about their purchase.

Look at Apple for example: they never compare themselves to other companies, they never give out specs, and they always trademark and brand commodity technologies with their own trademark. That's how a 120Hz display is "ProMotion" in Apple's language, or Gorilla Glass is "Ceramic Enforced Glass".
 
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