Recommend engine cleaner

[3800Series]

Surprised that you have varnish and nothing tried to date was making any engine cleaning difference at all ?

No, nothing as of yet. There is no noticeable build up under the valve cover, I replaced the gasket when I bought the car. Just a deep gold varnish, not really clear kinda cloudy look to it, I don't have much service records on the vehicle but everything I have shows 8k+ mile OCI's.

When I bought the car it was burning noticeable oil, but it wasn't drive frequently. I originally started using cleaners due to the oil burn, was maybe 1/4th a quart per 1k miles. Maybe about half that with the most current oil change, again no noticeable build up just a lot of varnish everywhere from long OCI on bulk dealer oil.

Since I can't physically see cleaner rings, I decided I would try to gauge cleaning but reduction in varnish. Overall I've done several oil short oil changes but I've yet to put even 15k miles on the vehicle which would be 2 normal OCI's for me. I didn't expect dramatically cleaning but I would be a little dishonest if I didn't say I expected HPL EC followed by a flush to at least have some effect on the varnish but at the end of the day it is what it is.

 

[ChrisD46]

No, nothing as of yet. There is no noticeable build up under the valve cover, I replaced the gasket when I bought the car. Just a deep gold varnish, not really clear kinda cloudy look to it, I don't have much service records on the vehicle but everything I have shows 8k+ mile OCI's.

When I bought the car it was burning noticeable oil, but it wasn't drive frequently. I originally started using cleaners due to the oil burn, was maybe 1/4th a quart per 1k miles. Maybe about half that with the most current oil change, again no noticeable build up just a lot of varnish everywhere from long OCI on bulk dealer oil.

Since I can't physically see cleaner rings, I decided I would try to gauge cleaning but reduction in varnish. Overall I've done several oil short oil changes but I've yet to put even 15k miles on the vehicle which would be 2 normal OCI's for me. I didn't expect dramatically cleaning but I would be a little dishonest if I didn't say I expected HPL EC followed by a flush to at least have some effect on the varnish but at the end of the day it is what it is.

I would now consider switching to Restore and Protect , use a good quality oil filter and lastly replace the PCV valve . 4K mile / 4 month OCI X 3 before setteling down to something like a 5K mile / 6 month OCI … This vehicle may just need longer to show cleaning .

 

[3800Series]

I would now consider switching to Restore and Protect , use a good quality oil filter and lastly replace the PCV valve . 4K mile / 4 month OCI X 3 before setteling down to something like a 5K mile / 6 month OCI … This vehicle may just need longer to show cleaning .

Thank you, but I've already replaced it, and every OCI has been less than 4.5k miles already most being 2k (1 year). I planned on using Valvoline RP next, I'm not really in a rush I just don't drive the vehicle much and has more so been a curiosity for me to see what has any noticeable effect.

I just seen the thread and figured I would share my experience with engine cleaners is all.

 

[gfh77665]

IView attachment 237290 I Like this engine cleaner.

That will work.

 

[ChrisD46]

Another suggestion would be Rislone engine cleaner (available from WM in yellow bottle). Just add to new oil fill - it’s safe to run for an entire OCI .