392 - Oil Life

[GrayHawk20]

I recently did an oil change about 700 miles ago. The dealership reset the oil life gauge back to 100%. I noticed today that it shows at 89% after just 700 +/- miles. I know computers aren't 100% accurate and you shouldn't rely on them much, but it seems like it drains fast. Granted these engines de in terms of displacement and demand more in oil. I know oil consumption would increase with a larger engine but I'm used to changing it every 5k-6k miles not 4k (which is around 6 months). I dont drive it aggressive from a stop every single day I am driving it. I don't think any this is wrong but just wanted to hear others input about what they have experienced now that the 392 Wrangler has been out awhile.

Note: My 392 is completely stock and doesn't have the XR package.

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[GtX]

This implies 6,363 miles OCI. Seems OK.

How long do you expect to go?

 

[GrayHawk20]

This implies 6,363 miles OCI. Seems OK.

How long do you expect to go?

OCI? I when I had the 3.6 and it was time for its oil change it would be at 50% at 5k miles. I know the engine is obviously different, but it just seems like its consuming oil a lot faster than it should. I can see if I was punching the gas pedal all time that it would be using more oil.

 

[GtX]

OCI?

Oil change interval.

I change the oil in my 3L at 5K miles. Don't care what the computer says.

 

[MSparks909]

OCI? I when I had the 3.6 and it was time for its oil change it would be at 50% at 5k miles. I know the engine is obviously different, but it just seems like its consuming oil a lot faster than it should. I can see if I was punching the gas pedal all time that it would be using more oil.

It’s not consuming oil it’s just wearing it faster. Pretty normal for a high performance V8. The oil temps on these 6.4s runs pretty high IMO which leads to faster thermal breakdowns. Change it every 5K miles and you won’t have any issues.

 

[frank-o]

It’s not consuming oil it’s just wearing it faster. Pretty normal for a high performance V8. The oil temps on these 6.4s runs pretty high IMO which leads to faster thermal breakdowns. Change it every 5K miles and you won’t have any issues.

I agree, I was confused by the consuming description. I figured it would be the heat and nature of the 392 that would cause the life to be somewhat “short” on a relative basis. I also thought I read that the oil change interval was not supposed to exceed 6 months, regardless of mileage anyway.

 

[GrayHawk20]

It’s not consuming oil it’s just wearing it faster. Pretty normal for a high performance V8. The oil temps on these 6.4s runs pretty high IMO which leads to faster thermal breakdowns. Change it every 5K miles and you won’t have any issues.

I have been changing it around 4k because by the point the oil is 35% and I already had a C63 have problems from the previous owner (which I traded in for something else) and I dont want to risk it. Thanks for the clarification. Much appreciated!!

 

[GrayHawk20]

I agree, I was confused by the consuming description. I figured it would be the heat and nature of the 392 that would cause the life to be somewhat “short” on a relative basis. I also thought I read that the oil change interval was not supposed to exceed 6 months, regardless of mileage anyway.

Is the consuming description mentioned in the owner's manual? Do you know what page it was on so I can look. So far with the mileage I drive a day it's been right at or slightly past 6 months.

 

[GrayHawk20]

Oil change interval.

I change the oil in my 3L at 5K miles. Don't care what the computer says.

The thought of 35% and 4K is what was scary to me. Now if it was reading 50% and 5k or something Id still change it out of habit because ive always changed it at 5k regardless.

 

[GtX]

You're over thinking it. What is your OCI? Change it then. Done.

 

[GrayHawk20]

right now im doing it at 4k or so.

 

[GtX]

You're good

 

[GrayHawk20]

You're good

Just seems to get consumed so fast lol my other V8 granted not N/A doesn't kill oil that quick lol

 

[GtX]

Tendancy is to think a computer or algorithm is "smarter" but consider the program was probably created by a junior employee manager by a middle manager directed by a director with self interested motivation to drive the stock price in order to pad their own bonus.

Is this aligned with your priorities for your asset?

 

[GrayHawk20]

Tendancy is to think a computer or algorithm is "smarter" but consider the program was probably created by a junior employee manager by a middle manager directed by a director with self interested motivation to drive the stock price in order to pad their own bonus.

Is this aligned with your priorities for your asset?

? on the last sentence

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