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(Updated for clarification) 2001 RX300 165000 miles consuming 1 quart 5W30 Kirkland Synthetic oil per 200 miles with new PCV valve. Reversed the PVC flow per the pics. This modification connects the rear valve cover to the airbox and the front valve cover to the PVC valve. All evap hoses are connected and the PVC valve flows in the correct direction to the intake. Crankcase pressure venting is maintained, it just vents through the front valve cover instead of the rear where it is sucking oil. You will need 5' of hose for this. Modify at your own risk. Will update with results....
Here's a diagram of the fix...
Yes it is still working. Installed at 161k miles. Currently at 177k miles. I'm very happy with the results. No significant oil consumption. 5w30 synthetic. Consumes about 1 quart in 5k miles, which is when its time for an oil change anyway.
If rerouting the PCV, do consider the impact. Breather should be at the top, PCV should be above the max oil level [which we know is the issue]. Personally I would leave the setup as is and add a catch can and figure out a way to drain the collection into the sump
Yes it is still working. Installed at 161k miles. Currently at 177k miles. I'm very happy with the results. No significant oil consumption. 5w30 synthetic. Consumes about 1 quart in 5k miles, which is when its time for an oil change anyway.
09-24-24 | 08:50 PM
