Has anyone noticed their gladiator burning oil

[MoxiesDad]

I haven't read pages 2-5 of this thread, but I haven't seen any mention of 0W20 oil contributing to the the excessive oil consumption. For those of you experiencing the oil consumption issue, why not change to 5W30 on the next oil change, then report back your findings. Check 540ratblog.wordpress.com for an engineer's study of motor oils. His viscosity of choice is 5W30.

Sponsored

 

[Trailman]

I change mine when uConnect says to.

OP, what does uConnect say your oil life is at?

 

[ShrimpHappens]

Add Subaru to the list of manufacturers that say that burning a quart between oil changes is normal.

But hey, only burning a quart is a lot better than where they were 10 years ago!

 

[jac04]

Add Subaru to the list of manufacturers that say that burning a quart between oil changes is normal.

Back when I had Subarus, which wasn't all that long ago, they said 1 quart every 1000 miles was acceptable. At that rate, you'd never need to do an oil change, just a filter every so often

 

[ShadowsPapa]

I haven't read pages 2-5 of this thread, but I haven't seen any mention of 0W20 oil contributing to the the excessive oil consumption. For those of you experiencing the oil consumption issue, why not change to 5W30 on the next oil change, then report back your findings. Check 540ratblog.wordpress.com for an engineer's study of motor oils. His viscosity of choice is 5W30.

I agree with him. I'd not go "heavier" but that 0W20 bit is just a bit light IMO for any real work.

 

[Papa mojo]

I don't know if it has been mentioned yet but I would check the rear main seal, Jeeps are notorious for leaking there. Could be a leak and not burn.

 

[ShadowsPapa]

I don't know if it has been mentioned yet but I would check the rear main seal, Jeeps are notorious for leaking there. Could be a leak and not burn.

He'd see that, there'd be a drip on the floor or the transmission area would be shiny or wet looking. A quart of oil would soak the whole underside and drip in multiple spots.
(odd you mention rear main - none of our 3.6 equipped Jeeps have ever leaked anything)

 

[Lost1wing]

Perhaps the way the vehicle is operated consumes more oil. Heavy loads especially on a cold engine comes to mind. I'm not one for warming up the engine before driving, but I try not to put much of a load on it until it is warm. I had one burn oil because of my driveway and uphill battle out of the subdivision. When I moved, that issue went away.

 

[Artsifrtsi]

I'd wager a guess that the oil loss is blow-by... Does the engine rattle/sound like a diesel under load?

I've needed to start running mid-grade fuel to quiet the motor down. I'll be adding a catch can soon to see if that's the issue.

 

[ShadowsPapa]

I'd wager a guess that the oil loss is blow-by... Does the engine rattle/sound like a diesel under load?

I've needed to start running mid-grade fuel to quiet the motor down. I'll be adding a catch can soon to see if that's the issue.

If you do, my suggestion is the best one you can afford, insulated, quality, not an eBay generic.
There are huge differences in how they work and what they "collect".

Blow-by means bad rings because it's excessive combustion gases escaping.
Blow-by is what used to cause oil to be in the air cleaner because the PCV couldn't keep up with the excess gases getting past the rings. More was entering the crankcase than could be evacuated by the PCV system so pressure built up in the crankcase and blew up into the air filter housing where air was actually supposed to enter the crankcase. So there was no vacuum in the crankcase. You want a vacuum in the crankcase. Not pressure.

 

[Mac]

If you do, my suggestion is the best one you can afford, insulated, quality, not an eBay generic.
There are huge differences in how they work and what they "collect".

Blow-by means bad rings because it's excessive combustion gases escaping.
Blow-by is what used to cause oil to be in the air cleaner because the PCV couldn't keep up with the excess gases getting past the rings. More was entering the crankcase than could be evacuated by the PCV system so pressure built up in the crankcase and blew up into the air filter housing where air was actually supposed to enter the crankcase. So there was no vacuum in the crankcase. You want a vacuum in the crankcase. Not pressure.

Have you actually put a catch can on a 3.6? I have seen you post this info before and it reads like you just google for some info and post it up with no first hand knowledge.

 

[SnazzGlad]

Read a couple pages….I guess that’s why a lot of dealerships put in 6 quarts instead of 5. Damn oil burners. Guess I’m gonna look into a Maverick or Bronco now ?.

 

[ShadowsPapa]

Have you actually put a catch can on a 3.6? I have seen you post this info before and it reads like you just google for some info and post it up with no first hand knowledge.

LOL - no Google involved at all there. a couple of years ago I dug deep into it when I saw what GM was doing - and my digging turned up Jeep and others having catch cans added as an "accessory" item to take care of the oil on the intake valves issue.

Remember, I'm trained in diagnostics, and I've passed a number of tests in tracking oil consumption, and have the tool for testing the legacy PCV valves.
It's called experience. I do recall some of the specs for testing certain V8 engines for proper PCV operation and crankcase vacuum, and of course the racers who run vacuum pumps and remove the PCV system completely........
I'm no "DIYer" with cars and engines. I own my valve equipment and boring bar, etc.

I've read, studied. Some I knew from decades of working on engine diagnostics and repair, some I got curious and learned. I learned from the mistakes of others, and tech articles and documents way back. I guess I'm a sponge for knowledge. While everyone else is watching some games on TV, I'm reading tech books, service bulletins, patents and so on.

 

[ShadowsPapa]

Read a couple pages….I guess that’s why a lot of dealerships put in 6 quarts instead of 5. Damn oil burners. Guess I’m gonna look into a Maverick or Bronco now ?.

So you might suggest that I definitely do not trade my truck for a 2022 as I might end up with an oil burner? Keep mine because it has never been down a quart between changes? I'll tell my wife this is the last Grand Cherokee she'll ever own because all the others are oil burners.
I guess it's time for a Prius, they can't burn much oil, can they? On the other hand, they take over 4 quarts, so maybe that extra half quart over 4 is because they'll burn it?

 

[XraytecH]

Mostly short city driving here so I barely notice oil burn off since my change interval is short.

Sponsored