Normal Oil Consumption Rate? Better Oil?

[dblshock]

Originally Posted By: dblshock
I'd try a 15w40 HDEO and 640:1 TCW-3 spiked fuel for 7500.


2T(TCW-3) will clean-up the rings and top end spiffy, my Toyota's been on a steady diet 42k, buy a quart and get started, 1oz. to every 5 gal. you add to the tank...couple weeks you'll have improvement.

 

[SwampSurvivor]

It's a gasoline engine with close to a half million miles. Let it burn some oil in it's old age

 

[HerrStig]

Time for a rebuild. Mouse milk won't help.

 

[wemay]

Originally Posted By: Miller88
It's a gasoline engine with close to a half million miles. Let it burn some oil in it's old age

Agreed... she's earned it.

 

[Nissan101]

When all fails 20w50 will save.

 

[dblshock]

milk it out another 200k...thats Toyota value.

 

[landtoy80]

Got this from Liqui Moly

the other hand sometimes the problem is caused by the piston rings which
are stoked to the piston and not fulfilling their Job on expanding. Here
you should do an internal cleaning of the engine. But on engines with to
much wear it could happen that you clean and afterwards, since you removed
al the filth you get to know the real problems you engine has internally,
so use with caution.
http://www.liqui-moly.de/liquimoly/produ...voiladb=web.nsf

So we have many options here! (Addressing the issue of internal wear)

1 option: You keep using the same oil and ad our Viscoplus. I think you
have an oil sump of almost 10 Liters Right? So you could use our Viscoplus
heavy Duty (code 2697). Beside this you could ad our Oil additiv. So you
would have the best possible protection and oil consumption reduction.
(never get over the maximal filling level and do not over additivate)
http://www.liqui-moly.de/liquimoly/produ...voiladb=web.nsf
http://www.liqui-moly.de/liquimoly/produ...voiladb=web.nsf

2 option: You change to our Mos2 Leichtlauf 10W-40 and ad the Viscoplus
Heavy Duty (this oil has already the Mos2 content)
http://www.liqui-moly.de/liquimoly/produ...voiladb=web.nsf

3 option: You change to our Super Low friction Motor Oil Mos2 15W-50 and
observe the oil consumption.
http://www.liqui-moly.de/liquimoly/produ...voiladb=web.nsf >>>



I have used MOS2 oil in past with good luck, might just have to pay the extra cost and try it again.

 

[CentAmDL650]

You probably have a combination of worn valve seals and stuck rings causing the higher oil consumption.

I would use a reatively gentle crankcase cleaner like Marvel Mystery Oil, Sea Foam, Rislone, ZMax, or Kreen for 1 relatively short OCI in cool or cold weather. This would at least have some effect on stuck rings.

When changing the oil, I would use a specific "high mileage" oil that likely contains seal swellers and will help to some degree with oil getting past the valve seals. If you want even to reduce valve seal oil losses even more, try using some percentage of ester oil in the crankcase.

A gas adittive like TCW-3 or MMO will clean up the mess on the back of the valve heads left by oil leaking past the valve seals and add some lubrication to the fuel injectors and fuel pump.

It sounds like you're not dealing with a plugged up catalytic converter yet, but continuing over a long distance with elevated oil consumption will get you there. So fixing the oil useage problem now will avoid more collateral damage later.

 

[landtoy80]

I had the cat and O2's off a year ago and did a oxalic acid and citric acid soak. Cat was coated but not plugged. The soak cleaned the O2 and the O2 check engine code went away. Passed emission test.

I found that if i drive all hwy miles i don't get O2 CE codes. With city driving i get O2 codes. The ZDDP must be fouling the cat and O2's. I run only Shell and Conoco gas. Either the additives in their gas or just the long drives clean off the O2's.

Over the years I have added Seafoam and MMO to oil and gas with no change in oil consumption so I guess I have normal wear of rings.