Overfilling engine oil to 12L+ (video)

[Hootbro]

LOL. That's the best and most genuine compliment I've gotten in a long, long time.

I try and look at these things objectively.

Probably better than 99% of oil-related engine failures are from folks failing to check their oil level, resulting in oil contaminate concentration cycled through the bearings/interface surfaces, and eventually oil starvation. This is intensified by extended oil change intervals. Most manufactures, including Jeep, allow for silly levels of permissible oil consumption --sometimes as great as 1 quart every ~1000 miles. Even at only a third of that maximum "okay" consumption rate, a 5 quart fill would be at 2 quarts in the sump after 9k miles. What is the greater danger, overfilling by a quart or falling victim to typical human behavior?

No one has ever lost an engine from overfilling by 1 quart.

And yes, limiting oil capacities and increasing maintenance intervals are absolutely a design criteria forced on powertrain engineering teams.

None of this is worth fighting over, but it does warrant some thought.

There is getting away with something and there is a best practice. I do not subscribe to overfilling as a best practice but you are entitled to do as you see fit for you.

We have talked about oil grades before and probably on the same page but that is mainly because there is data points to reference. You are probably the first I have ever seen talk about purposely overfilling.

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