5.7 burning oil

[Sandman285]

Last February I had to get my catalytic converter replaced. Over this past summer, it went bad. Took it to RAM and they said both of my converters were melted. Slowly over time I noticed I was also burning oil. Smoking at start up and small amounts of smoke will driving, especially while accelerating. 140k miles on the truck.

Any reason why I would be burning oil now? I have to top it off every so often. Should I let it be? Or try to find out what the issue is that I’m burning oil.

2016 RAM 5.7

 

[Burla]

You are burning oil because oil is getting into combustion chamber. Get a catch can right away. It could be carbon on rings or rings gone bad. You can clean rings, run si-1 redline full strength one bottle per half tank gas, % matters. Run valvoline restore and protect as well. si-1 cleans rings from above, and restore and protect from below. After restore and protect run a thick oil, redline 5w30 or m1 0w40 something like that. Will this work, just maybe. If you have a valve leaking you need to crack it open, same if ring is deteriorated. This will clean rings decently without removing them and stop oil from coming through pcv, now if the oil is coming from somewhere else, this would still help but just a little.

INSIDE Valvoline's SECRET R&D Laboratory to UNCOVER the TRUTH

Every engine begins building up deposits the moment it starts up for the first time. Deposits in the piston ring grooves can negatively affect the performanc...

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[Burla]

Can do leak down and compression testing plus pull each plug and see if oil is only on specific cylinders. Would be next step, or some would say first step. Depends on what you feel like doing, I'm going off what you have done so far to give you options.

 

[Wild one]

Last February I had to get my catalytic converter replaced. Over this past summer, it went bad. Took it to RAM and they said both of my converters were melted. Slowly over time I noticed I was also burning oil. Smoking at start up and small amounts of smoke will driving, especially while accelerating. 140k miles on the truck.

Any reason why I would be burning oil now? I have to top it off every so often. Should I let it be? Or try to find out what the issue is that I’m burning oil.

2016 RAM 5.7

Buy yourself a decent leak down tester,and do a leak down test.If you hear air hissing out the intake,you have a bad intake valve,if you hear air out the exhaust you have a bad exhaust valve.
Also get yourself a good boroscope camera and take a look inside the cylinders,and see if you have a missing piece of piston top,as it sounds like you might have a broken ring,or bad valve seals.

Mike beat me to the punch,lol

 

[crackerjack1957]

Last February I had to get my catalytic converter replaced. Over this past summer, it went bad. Took it to RAM and they said both of my converters were melted. Slowly over time I noticed I was also burning oil. Smoking at start up and small amounts of smoke will driving, especially while accelerating. 140k miles on the truck.

Any reason why I would be burning oil now? I have to top it off every so often. Should I let it be? Or try to find out what the issue is that I’m burning oil.

2016 RAM 5.7

The oil burning past the piston rings is what took out the catalytic converters.

 

[Burly Built]

I have a 2019 (50k miles) doing the same thing. Smokes on startup after it has been sitting for a couple hours. I believe mine to be either valve stem seals or excessive valve stem to guide clearance. I haven't had converter problems yet, but I'm sure they are coming.

 

[04fxdwgi]

Last February I had to get my catalytic converter replaced. Over this past summer, it went bad. Took it to RAM and they said both of my converters were melted. Slowly over time I noticed I was also burning oil. Smoking at start up and small amounts of smoke will driving, especially while accelerating. 140k miles on the truck.

Any reason why I would be burning oil now? I have to top it off every so often. Should I let it be? Or try to find out what the issue is that I’m burning oil.

2016 RAM 5.7

Smoke on acceleration is usually rings, where a puff of smoke on startup and after deceleration is a sign of intake valve seals.

 

[Tominator223]

Pull some spark plugs. If its rings the whole end will usually be covered in burnt oil. If they kinda have a line of oil residue it’s probably valve seals. Valve seals can be done with heads on. As for cats. The factory cats don’t seem as good as they used to be. I did aftermarket cats on my 04 that was almost 300k miles ago. Walkers. No mf no oem. I do a lot of on off hwy & idle. My 2cents