A while back I posted a thread regarding my Corolla's oil consumption. Someone suggested if I had installed a PCV valve from a car parts store (as opposed to an OEM valve), that I try the OEM version. After my previous oil change I checked the mileage I went before 1 qt of oil needed to be added. That distance (with the car parts store valve) was 600 miles. At my last oil change I installed the OEM valve and my car went 1200 miles before I had to add 1 qt. Wow! Twice as far! I wonder what the difference is between the two valves that makes such a huge difference? It's nothing but OEM valves from here on....
PCV valves - OEM vs auto parts store
- Thread starter grampi
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Similar issue with my E-150. I cheaped out and went with an aftermarket PCV valve and went from zero oil use to a quart in about 1,500 miles. I bought a Motorcraft PCV valve and oil use stopped again. I will not use aftermarket PCV valves as a result. As a matter of fact I won't use aftermarket thermostats or sensors either. Flame suit on.
Originally Posted by demarpaint
Similar issue with my E-150. I cheaped out and went with an aftermarket PCV valve and went from zero oil use to a quart in about 1,500 miles. I bought a Motorcraft PCV valve and oil use stopped again. I will not use aftermarket PCV valves as a result. As a matter of fact I won't use aftermarket thermostats or sensors either. Flame suit on.
Thing is, the OEM valve wasn't any more expensive than the aftermarket ones...
Similar issue with my E-150. I cheaped out and went with an aftermarket PCV valve and went from zero oil use to a quart in about 1,500 miles. I bought a Motorcraft PCV valve and oil use stopped again. I will not use aftermarket PCV valves as a result. As a matter of fact I won't use aftermarket thermostats or sensors either. Flame suit on.
Thing is, the OEM valve wasn't any more expensive than the aftermarket ones...
Originally Posted by demarpaint
Similar issue with my E-150. I cheaped out and went with an aftermarket PCV valve and went from zero oil use to a quart in about 1,500 miles. I bought a Motorcraft PCV valve and oil use stopped again. I will not use aftermarket PCV valves as a result. As a matter of fact I won't use aftermarket thermostats or sensors either. Flame suit on.
I think you are right about this my friend... ^^^^^
I lament having a aftermarket thermostat put in my lady's Camry... Though it has been fine thus far knock on wood.
And I'd bet good money Trav would agree with you also.
Similar issue with my E-150. I cheaped out and went with an aftermarket PCV valve and went from zero oil use to a quart in about 1,500 miles. I bought a Motorcraft PCV valve and oil use stopped again. I will not use aftermarket PCV valves as a result. As a matter of fact I won't use aftermarket thermostats or sensors either. Flame suit on.
I think you are right about this my friend... ^^^^^
I lament having a aftermarket thermostat put in my lady's Camry... Though it has been fine thus far knock on wood.
And I'd bet good money Trav would agree with you also.
When I replaced a PCV valve on an older Accord, there was a night and day difference with the OEM part and the new aftermarket one. Unless oil consumption is high or if the engine is a known oil sludger, I don't even touch PCV valves anymore.
Originally Posted by bbhero
Originally Posted by demarpaint
Similar issue with my E-150. I cheaped out and went with an aftermarket PCV valve and went from zero oil use to a quart in about 1,500 miles. I bought a Motorcraft PCV valve and oil use stopped again. I will not use aftermarket PCV valves as a result. As a matter of fact I won't use aftermarket thermostats or sensors either. Flame suit on.
I think you are right about this my friend... ^^^^^
I lament having a aftermarket thermostat put in my lady's Camry... Though it has been fine thus far knock on wood.
And I'd bet good money Trav would agree with you also.
I would. While a simple device a PCV valve must be properly calibrated (usually through spring selection) during manufacture to work as it should in the engine it was designed for. The shake and clean business may or may not bring the valve back to optimal operating specs, it does nothing for spring tension loss.
As with thermostats and other parts, years ago you could buy a decent aftermarket product but quality has been going downhill for years and now with all the third world outsourcing quality and QC has become sketchy.
An out of spec PCV (it doesn't even have to be stuck) can cause sludge, deposits and oil consumption. This is a good article and worth reading.
http://www.agcoauto.com/content/news/p2_articleid/197
Originally Posted by demarpaint
Similar issue with my E-150. I cheaped out and went with an aftermarket PCV valve and went from zero oil use to a quart in about 1,500 miles. I bought a Motorcraft PCV valve and oil use stopped again. I will not use aftermarket PCV valves as a result. As a matter of fact I won't use aftermarket thermostats or sensors either. Flame suit on.
I think you are right about this my friend... ^^^^^
I lament having a aftermarket thermostat put in my lady's Camry... Though it has been fine thus far knock on wood.
And I'd bet good money Trav would agree with you also.
I would. While a simple device a PCV valve must be properly calibrated (usually through spring selection) during manufacture to work as it should in the engine it was designed for. The shake and clean business may or may not bring the valve back to optimal operating specs, it does nothing for spring tension loss.
As with thermostats and other parts, years ago you could buy a decent aftermarket product but quality has been going downhill for years and now with all the third world outsourcing quality and QC has become sketchy.
An out of spec PCV (it doesn't even have to be stuck) can cause sludge, deposits and oil consumption. This is a good article and worth reading.
http://www.agcoauto.com/content/news/p2_articleid/197
Yeah Trav that what I would think you would think...
Trav, clinebarger, and The Critic are three of the very, very best guys on here with mechanical knowledge, parts expertise, and real world experience. You fellas all add a lot of great help to everyone on here. Best of the best
Trav, clinebarger, and The Critic are three of the very, very best guys on here with mechanical knowledge, parts expertise, and real world experience. You fellas all add a lot of great help to everyone on here. Best of the best
Where the PCV is the problem I try the following in this order:
1) Cleaning with non-chlorinated brake cleaner
2) Replacing with OEM
3) Replacing with generic if the OEM is known to cause issues because of design flaw. (Rare but can happen occasionally)
1) Cleaning with non-chlorinated brake cleaner
2) Replacing with OEM
3) Replacing with generic if the OEM is known to cause issues because of design flaw. (Rare but can happen occasionally)
What year is your Corolla?
I believe he has an 04 from his previous posts.
I use only OEM unless the car is worth less than $1500 anymore
Originally Posted by mehullica
I use only OEM unless the car is worth less than $1500 anymore
OEM Toyota ain't terribly bad price-wise. I paid $10 for a Prius one that will also fit other 1NZ and maybe ZZ/ZR engines in the Echo/Yaris/Scion/Corolla families.
I use only OEM unless the car is worth less than $1500 anymore
OEM Toyota ain't terribly bad price-wise. I paid $10 for a Prius one that will also fit other 1NZ and maybe ZZ/ZR engines in the Echo/Yaris/Scion/Corolla families.
Originally Posted by mehullica
I use only OEM unless the car is worth less than $1500 anymore
Not quite sure what the value of the car has to do with it. If an aftermarket PCV valve allows too much oil out of the motor, why not spend a couple bucks more to get an OEM one that actually works?
I use only OEM unless the car is worth less than $1500 anymore
Not quite sure what the value of the car has to do with it. If an aftermarket PCV valve allows too much oil out of the motor, why not spend a couple bucks more to get an OEM one that actually works?
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