Burning oil question

[smokey1]

did change P.C.V. in the PRIZM when consumption started with the synthetic , made no difference . Cleaned hose as well .

 

[smokey1]

sometimes it may be about the seating I suppose . This was the V.V.T.I. engine . Maybe that's the culprit at higher mileage . Does state oil usage in owners manual .

 

[440Magnum]

Originally Posted By: grease_monkey
Johnny and PT1 are right about the PCV Valve. let me tell you something... My 2000 dodge has a 4.7 V8 in it and that motor is supposedly a known sludge monster


This came up on a newsgroup I frequent recently. Where did you hear that the 4.7 is a "known sludge monster?" No one else in the NG had seen or heard of 4.7 sludge issues, apart from the fact that some models will form a water/oil emulsion in the top of the filler cap because its tall and tends to condense water vapor under the cap during short trips. It also turned out that a lot of people on the NG who piped up and said "yeah, I heard that too..." were simply confusing the 4.7 with the 2.7 60-degree v6, which did have Toyota-like sludge problems in its early incarnation.

You're dead right on the PCV valve clogging. For about 10 years now, manufacturers have been reducing the volume flow through the PCV system in order to get both better fuel efficiency and lower emissions, and a side-effect is that the lower air flow rate can accelerate clogging of the PCV system and can also aggravate sludge formation in the valve covers. With newer cars its more important to regularly service the PCV valve. Personally, I wouldn't let the PCV suck solvent through the engine, because that's where all the [censored] that breaks free will ALSO go- I'd remove the PCV valve and its tubing and flush it out manually, then re-install it.

 

[grease_monkey]

440 magnum go on to auto beef.com and type in 2000 Dodge durango and look up engine problems you will see what i mean. the 4.7 is a known sludge engine because they don't breath well. they were essentially based off the dry sump racing engine (so i have been told) sludge can be prevented by keeping the PCV in tip top condition and by changing your oil out frequently. the condensation in the filler tube is nothing more than a cosmetic issue and WILL NOT HURT THE MOTOR. That is what two dodge dealers, told me an independent mechanic and a co worker (owns a dakota) told me. In fact there is a TSB kit out for the condensation issue, it consist of baffles and a new oil cap and it sells for $10.

 

[Mark888]

On my 98 Camry V6 3.0 (same engine as the OP) the only thing that went bad on my car was the EGR valve at about year 7. Got check engine light when that happened.

But right after the EGR valve was replaced, the check engine light came on again, and this time it was charcoal cannister, but it was replaced under the 8 year emissions warranty.

No other engine problems encountered in the 11 years I owned the car. Never had to add a drop of oil in-between OCI. Used Mobil full synthetic since first oil change.