Hey guys. An episode of mental illness has me thinking too much about my 5VZ in 4x4 pickup. I have been running M1 with YZZD1 for the past 26,000 miles.
When I got the truck I replaced an aftermarket pcv that was acting rude. Later I reshimmed some of the valves and found the baffles in valve cover packed pretty nice with oil deposits. It took a half gallon of PB Blaster to clean them up. I also got the shopvac and a pick and pulled a small amount of this [censored] out of the valvetrain area. Then a toyota dealer tech told me that they just throw the valve covers away when they see this.
A BMW dealer shop manager, who does a lot of work on the side, showed me some before and after photos of a tough neglect case he got, where he ran the engine with ATF in the crankcase. So I decided to try this for myself, and changed oil with 1 quart of ATF mixed in, L10241 filter, and drove for 30 miles. On the drain, the oil looked pretty gross but was not so black that I couldn't see the red tint from ATF. That was over 15000 miles ago, and I have had no reason to be concerned that this caused any harm.
I'm switching to Rotella T5 after positive experiences with this in other cars. There's a bottle of LiquiMoly Motor Clean on my shelf that I want to get rid of. Why not use it in the 5VZ? All the other engines I have, including the one I intended to use this product in, are pretty pristine.
I am planning to change the filter, run the Motor Clean, then cut open both filters for analysis. But which filter is better for this kind of operation? On the shelf I have a pile of YZZD1, a couple FL400S, and a brand new L20195 (F01G24B1). But all of these filters, especially the Denso, seem to be known to be comparatively weak at filtering. Should I use a P1/Bosch filter instead when I use the Motor Clean? Or something else like Fram Ultra, roll of paper towels, or old teeshirt?
I'm also going to quit the M1 for cost reasons - planning to switch to Rotella T5.
When I got the truck I replaced an aftermarket pcv that was acting rude. Later I reshimmed some of the valves and found the baffles in valve cover packed pretty nice with oil deposits. It took a half gallon of PB Blaster to clean them up. I also got the shopvac and a pick and pulled a small amount of this [censored] out of the valvetrain area. Then a toyota dealer tech told me that they just throw the valve covers away when they see this.
A BMW dealer shop manager, who does a lot of work on the side, showed me some before and after photos of a tough neglect case he got, where he ran the engine with ATF in the crankcase. So I decided to try this for myself, and changed oil with 1 quart of ATF mixed in, L10241 filter, and drove for 30 miles. On the drain, the oil looked pretty gross but was not so black that I couldn't see the red tint from ATF. That was over 15000 miles ago, and I have had no reason to be concerned that this caused any harm.
I'm switching to Rotella T5 after positive experiences with this in other cars. There's a bottle of LiquiMoly Motor Clean on my shelf that I want to get rid of. Why not use it in the 5VZ? All the other engines I have, including the one I intended to use this product in, are pretty pristine.
I am planning to change the filter, run the Motor Clean, then cut open both filters for analysis. But which filter is better for this kind of operation? On the shelf I have a pile of YZZD1, a couple FL400S, and a brand new L20195 (F01G24B1). But all of these filters, especially the Denso, seem to be known to be comparatively weak at filtering. Should I use a P1/Bosch filter instead when I use the Motor Clean? Or something else like Fram Ultra, roll of paper towels, or old teeshirt?
I'm also going to quit the M1 for cost reasons - planning to switch to Rotella T5.
Last edited:
