Kreen Update

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Originally Posted By: TooManyWheels
Originally Posted By: Boss302fan
...spraying oil out of the dipstick tube over 3K rpms. its a buddy's truck, so I am hoping overtime, it cleans it up and stops whatever is causing the oil to backup out of the tube. The PCV has been changed ...


If that were my vehicle I would check for the correct dipstick, and the correct oil level. That, or the PCV system is still not venting.


Everything is correct and original to the truck. The PCV tube has vacuum and we changed the PCV twice to make sure it was not the valve.

This is a very carboned up engine and I suspect the rings are dirty or worn...
 
How long does it take to show effect? I pulled the stick today and the oil was golden brownish, not indicating any color change which I expected it to show after about 400 kms. I was expecting it to be dark brown by now at least. Is it all gone already without doing its job or should I wait??

I made a mistake though, drove for about 20 mins only after adding Kreen. Is that enough for it to evaporate off?
 
I believe the instructions are to add 1 quart, drive a 1000 miles. In that 1000 miles it should burn off while dislodging stuff.
Top off when needed.
Then after that first 1000 miles either rinse and repeat, or change the filter and add another quart.

On a sludged up beast I would be changing the filter every 1000 miles and dissecting it. If it was really messed up I'd be changing the oil too, better to make sure the pick up screen is not blocked with sludge.

For one that is close to the end of it's life you are better off dropping the pan and cleaning it out. If something does block the oil pick up the engine will go in short order.
 
Originally Posted By: MeaMurano
How long does it take to show effect? I pulled the stick today and the oil was golden brownish, not indicating any color change which I expected it to show after about 400 kms. I was expecting it to be dark brown by now at least. Is it all gone already without doing its job or should I wait??

I made a mistake though, drove for about 20 mins only after adding Kreen. Is that enough for it to evaporate off?


The color of the oil on the Dipstick is probably going to be lighter than the oil that is in the Oil Pan.

I believe that Kreen burns off within about 500 miles.

Trav is the expert on Kreen, I am sure he will chime in.
 
Originally Posted By: TooManyWheels
Originally Posted By: Boss302fan
...spraying oil out of the dipstick tube over 3K rpms. its a buddy's truck, so I am hoping overtime, it cleans it up and stops whatever is causing the oil to backup out of the tube. The PCV has been changed ...


If that were my vehicle I would check for the correct dipstick, and the correct oil level. That, or the PCV system is still not venting.


The vent for the PCV may have sludge or the entire bottom-end has caked enough up in 'low-flow' areas to causing the sump to sit closer to the crankshaft and the crankshaft is slopping around the oil more.
 
I have very little sludge visible thru the filler hole. Its just that all the parts are coated black. I did put my finger inside and scraped some off with the back of my nails and it was like a 1mm thick coating there, maybe even less, of black greasy stuff. But in 400 kms I still saw it there today. I opened the cap first time today because I thought if I open the engine I might just give the Kreen vapors a release.

So I opened the filler cap this morning on a cold engine at 400+ kreen kilometers and all is still black!?
 
^ It takes time. 1mm on top of the engine doesn't mean there is no 10mm on the bottom of the engine. I would change oil and filter at 1000km. Then next fill hold it longer and change filter every 1500km.
I would use dino(preferably diesel oil) oil and cheap oversize filters until you see cleaner engine.
Does your oil look black on dip stick?
 
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Originally Posted By: zyxelenator
^ It takes time. 1mm on top of the engine doesn't mean there is no 10mm on the bottom of the engine. I would change oil and filter at 1000km. Then next fill hold it longer and change filter every 1500km.
I would use dino(preferably diesel oil) oil and cheap oversize filters until you see cleaner engine.
Does your oil look black on dip stick?


The oil on the dip stick is still gold-brownish, but not black at all.

If it is that slow, it worries me because I have only one gallon of Kreen left and it cost me US$ 400 (including shipping!)
 
Originally Posted By: MeaMurano
Originally Posted By: zyxelenator
^ It takes time. 1mm on top of the engine doesn't mean there is no 10mm on the bottom of the engine. I would change oil and filter at 1000km. Then next fill hold it longer and change filter every 1500km.
I would use dino(preferably diesel oil) oil and cheap oversize filters until you see cleaner engine.
Does your oil look black on dip stick?


The oil on the dip stick is still gold-brownish, but not black at all.

If it is that slow, it worries me because I have only one gallon of Kreen left and it cost me US$ 400 (including shipping!)


Depending on the location of this 'coating', it may be a 'low flow' area of the engine and the hardest to clean.

Sounds like heavy varnish/deposits, but not sludge from the 'sound' of it. Any way you could post some pics? Have you thought of removing a valve cover?
 
Originally Posted By: MeaMurano
Originally Posted By: zyxelenator
^ It takes time. 1mm on top of the engine doesn't mean there is no 10mm on the bottom of the engine. I would change oil and filter at 1000km. Then next fill hold it longer and change filter every 1500km.
I would use dino(preferably diesel oil) oil and cheap oversize filters until you see cleaner engine.
Does your oil look black on dip stick?


The oil on the dip stick is still gold-brownish, but not black at all.

If it is that slow, it worries me because I have only one gallon of Kreen left and it cost me US$ 400 (including shipping!)

400km is not a lot,what I meant. Will see how it will look like close to 1000km or 1600km how kreen recommends.
$400 price is high. I think a gallon used over time with short OCIs will improve things.engine might not look spotless,but will feel better for sure.
Is car using/burning oil? You might want to save a little kreen to do piston soak. It might be hard to reach on those engines(I had same) but it worth it is your rings age gunked up.
Don't forget that kreen thins down oil, in hot country like yours I would switch to 40 grade oil if you were using 30. After you done with kreen, I would stay with M1 0w-40, Pennzoil Ultra 5w-40 for cleaning purposes.
Which oil do you use or used to use most time?
 
Originally Posted By: zyxelenator

400km is not a lot,what I meant. Will see how it will look like close to 1000km or 1600km how kreen recommends.
$400 price is high. I think a gallon used over time with short OCIs will improve things.engine might not look spotless,but will feel better for sure.
Is car using/burning oil? You might want to save a little kreen to do piston soak. It might be hard to reach on those engines(I had same) but it worth it is your rings age gunked up.
Don't forget that kreen thins down oil, in hot country like yours I would switch to 40 grade oil if you were using 30. After you done with kreen, I would stay with M1 0w-40, Pennzoil Ultra 5w-40 for cleaning purposes.
Which oil do you use or used to use most time?


I'll reply as you asked:
1. I will wait till 1500 to see what happens.
2. Engine drives great.
3. Used about 600 ml of oil in last 3000 kms. That is when Kreen arrived.
4. I used to get 20W50 in it (which is common here) but now switching to 10W50 Luqui Moly just because all oils are made in UAE, including Castrol, Havoline, Mobil, etc. So, I stick to ADNOC brand, which is the local company that owns all the petrol here!
5. I would not open up a VQ435DE Engine. Reching the rear sparks on the Murano is a PITA. The ones to the front are easy. I am not sure if I wnat to just do 3 piston though.

Phew.. long post! But I really love this engine.
 
I mentioned somewhere I'd give a Kreen update when I changed my oil. I haven't driven much in the past few months but did manage to log a thousand miles since I added a pint of Kreen to my 88 E-150. I dumped the oil today. It was close to 60*F here in NY, I'm back home and had the time. I'm happy to report the oil came out exactly the same as any of the other oil changes I've done to this van in the almost 24 years I've owned it. The oil was in the sump for about 1 year with 3,200 miles driven. Kreen was added a few months back with the intent of driving it 1000 miles and dumping it. I didn't expect much since the engine is very well maintained and only has 78,000 miles on it. Still the trips were very short, and it had time in the shop with a lot of idling. I hope I can keep this van another 24 years, LOL

I filled it with 5W30 SM Edge, and a bottle of Lubro Moly this time.
 
Thanks for the update...I didn't realize you had put Kreen in an engine you thought was clean. Well it's certainly clean now!

I'm currently doing a 20% MMO cleaning run since it's cold, but I've already put 225 miles on it since Saturday hah hah.
 
Originally Posted By: KCJeep
Thanks for the update...I didn't realize you had put Kreen in an engine you thought was clean. Well it's certainly clean now!

I'm currently doing a 20% MMO cleaning run since it's cold, but I've already put 225 miles on it since Saturday hah hah.



This year the Severe Service was a bit more severe than normal. I had it in the shop for some work, the mechanic forgot to turn it off, and ran it out of gas with over 10 gallons of gas in it. That was a long time to idle in one sitting. I haven't done any cleaning to it in a while, so I figured why not?

Keep in mind this van is about 24 years old and has low miles from a lot of short trip use. I have a feeling the MMO treatments over the years has it very clean so there wasn't much for the Kreen to clean. So I was happy to see nothing out of the ordinary. Also keep in mind, pulling the valve cover on a FI 4.9L Ford van is not an easy job, so having a look is not in the cards.
 
Thursday AM, I added 18 ounces of Kreen to my 6 quarts of blended Shell Rotella T6, 5w-40 and Formula Shell Synthetic oil, 5w-30.

The oil had been in service since September and had almost 7K miles on it.

I just completed a RT drive to Selma, NC and have logged 1K miles on the "Kreen Oil".

The oil on the dip stick now looks to be the color of "Espresso"....so Kreen may have found some pockets of dirt somewhere in the passageways etc....

Keep in mind that this Toyota 4 Runner is almost 15 years old, still does not burn a drop of oil and has over 190K miles on the odometer. I bought the 4 runner new in 1997 and have changed the oil frequently....mostly Dino and Dino/Synthetic national brands, "blended", in a mix of 50/50 or 60/40.

I will change it the oil out next week since it was used for 98% of my trip on highway speeds of 70 to 80 MPH with some traffic jams and "creep and crawl" driving in NJ on the Turnpike construction area's and in VA for the clearing of a traffic accident.

The oil is now dark, thin and still at the full level....still has the smell of Kreen.

But the engine runs smooth and no noticeable change in fuel mileage. I did not add Kreen to the Gasoline since I've been using my own mix of TC-W3 and Chevron Techron Fuel System and Gumout/Regane to each tank of gasoline for the past 3 years.
 
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Originally Posted By: mongo161
Thursday AM, I added 18 ounces of Kreen to my 6 quarts... The oil had been in service since September and had almost 7K miles on it. I just completed a RT drive to Selma, NC and have logged 1K miles on the "Kreen Oil"... I will change the oil out next week


If Kreen did its job, your oil filter may be completely saturated at this point. Might be a good idea to go ahead and change the oil now...
 
Johnoh...You are right about changing it very soon...like maybe tomorrow.

I doubt that the Bosch Distance Plus, oversized filter is clogged up since this Kreen seems to "liquefy" any deposits and the filter mag should catch any iron or steel particles that may have been accumulated.

The oil, IMO, is thin, and very dark after the long highway run and the Kreen should have done it's job well.

I'll just take the 4Runner for a 20 minute highway run on the Belt Parkway tomorrow, after the morning rush, drain the oil when its nice an hot and replace the filter.

Instead of the PU as a replacement oil....I may use this oil from Strauss Auto Parts, Full Synthetic, 5w-30 and a Mobil 1 oil filter. Blackstone Labs performed a VOA on this oil and found it to be very good oil. (See the posted VOA )

https://bobistheoilguy.com/forums/threads/strauss-auto-full-synthetic-5w-30-sm-gf-4-voa.161148/

So that is what I'll run instead of the PU.....
 
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Plain jane PYB would be perfect to use with Kreen if you want to do 5K-7K OCI's... This is what I am using on a buddy's 94 Suburban with 294K miles. Vehicle was very carboned up but is now cleaning up... May take 2 OCI's with Kreen but it is running better now then it did 5 years ago.
 
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