[Ivilla035]

Hello!

I own a 2016 340i coming up on 60k miles. For my next oil change, I purchased motul xcess 5w40 and an OEM filter. Currently in the car I have rotella t6 at about 3k miles. Changing it soon, but I remember I have a bottle of LM engine flush in my garage. Could I do it on my b58, and if so, how? I saw how you may need to change the oil twice or something.

I've changed oil brands a few times. I'm finally settling on motul. Just wondering if I should throw this engine flush bottle in the car before I change the oil.

Also, has anyone else done it on their b58? Will it harm anything?

Thanks !!

[AlmondJayRoM3]

Originally Posted by Ivilla035

Hello!

I own a 2016 340i coming up on 60k miles. For my next oil change, I purchased motul xcess 5w40 and an OEM filter. Currently in the car I have rotella t6 at about 3k miles. Changing it soon, but I remember I have a bottle of LM engine flush in my garage. Could I do it on my b58, and if so, how? I saw how you may need to change the oil twice or something.

I've changed oil brands a few times. I'm finally settling on motul. Just wondering if I should throw this engine flush bottle in the car before I change the oil.

Also, has anyone else done it on their b58? Will it harm anything?

Thanks !!

Not required if you use high quality engine oils. But since you have it, it won’t hurt to use it. Follow the directions on the bottle.

[Ivilla035]

Originally Posted by AlmondJayRoM3

Not required if you use high quality engine oils. But since you have it, it won’t hurt to use it. Follow the directions on the bottle.

Gotcha. Yea it's just been sitting on my shelf. I was thinking why not, but I didn't know much about it... like the procedure and if I'll hurt the motor.

[Ivilla035]

Been watching a few videos, still unsure. Has anyone done an engine flush?

[AlmondJayRoM3]

If you are worried about it harming your engine don't use it. If you do the flush follow the directions exactly and don't worry about it. If you are worried about the residual liquimoly flush after draining, fill with some cheap walmart synthetic (Quaker State Euro is only $22 for the 5 quart bottle), run your engine for 15 minutes, and drain again. Then complete your oil and filter change with the Motul oil you bought.

If all of that sounds wasteful, it probably is. The little bit leftover won't harm your engine after you do the normal oil change. Then again, the whole engine flush thing is not necessary for properly maintained engines.

[AspektUSA]

Engine flush seems useful if you're restoring old E46/E39/E36 cars that have had 'deferred' maintenance.

If you're on top of your oil changes and such, it's totally unnecessary at normal mileage.

[Ivilla035]

Originally Posted by AspektUSA

Engine flush seems useful if you're restoring old E46/E39/E36 cars that have had 'deferred' maintenance.

If you're on top of your oil changes and such, it's totally unnecessary at normal mileage.

Ah ok. I didn’t know if it mattered for me, as I’ve switched oils a few different times with different brands/viscosities.

[F32Fleet]

Originally Posted by Ivilla035

Hello!

I own a 2016 340i coming up on 60k miles. For my next oil change, I purchased motul xcess 5w40 and an OEM filter. Currently in the car I have rotella t6 at about 3k miles. Changing it soon, but I remember I have a bottle of LM engine flush in my garage. Could I do it on my b58, and if so, how? I saw how you may need to change the oil twice or something.

I've changed oil brands a few times. I'm finally settling on motul. Just wondering if I should throw this engine flush bottle in the car before I change the oil.

Also, has anyone else done it on their b58? Will it harm anything?

Thanks !!

Won't harm and it won't do anything for an overly maintained vehicle.

Might as well save it for a time when you buy a beater bimmer that has been neglected.

[Ivilla035]

Originally Posted by F32Fleet

Won't harm and it won't do anything for an overly maintained vehicle.

Might as well save it for a time when you buy a beater bimmer that has been neglected.

Dang. So even if I've changed to a few different oils, it won't do anything? I didn't know if it would do anything or not I assumed since all of them have different additives and viscosities it would be a good idea to just flush it.

[F32Fleet]

Originally Posted by Ivilla035

Dang. So even if I've changed to a few different oils, it won't do anything? I didn't know if it would do anything or not I assumed since all of them have different additives and viscosities it would be a good idea to just flush it.

There's not an overly large difference between off the shelf brands which are blended to the same approvals. The differences which do exist are found at the end of the extended drain intervals (10k miles and over).

[AlmondJayRoM3]

Originally Posted by Ivilla035

Dang. So even if I've changed to a few different oils, it won't do anything? I didn't know if it would do anything or not I assumed since all of them have different additives and viscosities it would be a good idea to just flush it.

I think you have the wrong idea of what liquimoly engine flush does. It’s less of a flush and really it’s a cleaner. Engine flushes consist of a solvents (typically naphtha or kerosene) and detergents. They clean and and disperse hardened sludge and hardened/coked oil. It gets suspended in your oil and gets drained out.

[ooshnoo]

I been using it once a year for each my cars for almost 10 years now…2 BMWs, 1 Dodge and 3 GMCs and never an issue.

It basically turns your oil into the consistency of water, which allows it to easily and fully drain out of the engine…brining with it all the dirt, sludge, etc.

[rostrata]

Just did a flush with the liquimoly pro line stuff on my M340i (2020). I couldn’t believe all the shit that came out of the motor. Absolutely insane. And it flowed freely and completely. Drain pan was coated in brown sludge. Filled with Liquimoly 6600 and cranked it. Quiet as hell, smooth as hell, and just feels like it’s almost new again. Not trying to be dramatic with that statement but that’s exactly how it's operating. Stage 1 tune since 4,700 miles or so with occasional E30 mix. Sitting at 56k now. Very pleased. Not sure how anyone would say this shit doesn’t work. All motors collect junk on the internals. Doesn’t matter how often you change the oil.

[mmm-five]

This is what's in it...if anyone is interested.

https://sichdatonline.chemical-check...09-2022_EN.pdf

[MyBimma]

Hi Everyone,

New to bummerpost.

Would a engine flush using liquid molly or something else help clear this?

I did genuinely have it serviced 7 months ago can’t seem to understand what’s gone wrong.

Hoping it’s a new timing chain and a good old engine flush ?

Any help or advice would be greatly appreciated

Thanks

[Billfitz]

You may have had it serviced 7 months ago but it looks like it wasn't serviced for seven years before that.

[MyBimma]

Originally Posted by Billfitz

You may have had it serviced 7 months ago but it looks like it wasn't serviced for seven years before that.

Full service history. Prior to that was 12 months ago. But trying to figure out if it’s repairable

[Billfitz]

The only time I've seen an engine that bad was when people used mineral oil and never changed it.

[Ivilla035]

Originally Posted by MyBimma

Hi Everyone,

New to bummerpost.

Would a engine flush using liquid molly or something else help clear this?

I did genuinely have it serviced 7 months ago can’t seem to understand what’s gone wrong.

Hoping it’s a new timing chain and a good old engine flush ?

Any help or advice would be greatly appreciated

Thanks

Honestly at that point, it could be an option to flush it once or twice. It looks pretty far gone, so that's your last resort type thing. I'd close it up and try, worse case scenario it goes bad and you'll need a new motor cause it's too far gone. Worth a shot, I've seen it work wonders.

[Ivilla035]

Originally Posted by MyBimma

Hi Everyone,

New to bummerpost.

Would a engine flush using liquid molly or something else help clear this?

I did genuinely have it serviced 7 months ago can’t seem to understand what’s gone wrong.

Hoping it’s a new timing chain and a good old engine flush ?

Any help or advice would be greatly appreciated

Thanks

If that was my motor, I'd go grab the flush from autozone (liquimoly) and throw it in. But at that point, I'd even grab 2 bottles and do it a second time with the cheapest synthetic you can find (kirkland or supertech) depending on how it looks/sounds. The flush would likely be your best bet, but do it at your own risk. That's just what I'd do in an attempt to save it. Update us if you do!

[MyBimma]

Originally Posted by Ivilla035

If that was my motor, I'd go grab the flush from autozone (liquimoly) and throw it in. But at that point, I'd even grab 2 bottles and do it a second time with the cheapest synthetic you can find (kirkland or supertech) depending on how it looks/sounds. The flush would likely be your best bet, but do it at your own risk. That's just what I'd do in an attempt to save it. Update us if you do!

Initially the only thing I could hear was the timing chain making that dreaded sound on a cold start up… after 15 minutes of the car warming up, the sound would fade away substantially.

I do have the car booked in for a timing chain at an independent garage, hopefully they can do the flush as well.

Retailer diagnosed the following ;

Visible float/movement on the cam shaft
Crank shaft has float/movement which is outside of tolerance

Also play in the time chain

There is a significant difference in the oil condition from the top of the engine to the bottom


…. My confusion is that I’ve genuinely had it services accordingly to the manufacturer recommendation with proof of servicing.

Doesn’t make any sense to me whatsoever

[MyBimma]

Originally Posted by Ivilla035

Honestly at that point, it could be an option to flush it once or twice. It looks pretty far gone, so that's your last resort type thing. I'd close it up and try, worse case scenario it goes bad and you'll need a new motor cause it's too far gone. Worth a shot, I've seen it work wonders.

This is another image … I’m assuming this is what they’re referring to being outside the tolerance.