Excessive Oil Consumption Gen 5 3S-GTE
- Thread starter Roreri
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So for those 3k rpm in neutral cycles, do you have a video to watch to pass the time? Or do you have a Ferris & Cameron type setup for the throttle?
I will be watching the oil pressure gauge closely. I will just set a 10lb dumbell on the floor to hold the pedal in place. I can kick it out of the way if needed to drop the revs.
BG Dynamic Engine Restoration Service:
I started the process at 7:45am, gathering tools and supplies. I added the can of 44K to the tank, then I went and disposed of my used oil so I would have plenty of capacity for the three drains I would need doing. I then found an out of the way spot to do the process. Thankfully there are lots of inactive residential construction sites with finished public roads around so I won’t be bothering the neighbors. As we plan to live here for the rest of our lives that’s a good idea. Sadly, by the couple of cat beds I saw tucked inside a little niche where I picked was also the site of some cat abandonment…
First I drained the motor oil, then changed the filter. The last time I changed the oil was 2093km ago. So now is a good time to do this based on my accelerated oil change schedule.
I dropped about 4 quarts of the 6 quart Dynamic Engine Cleaner into the engine. This leaves me another 2 quarts to try a half program later on if I want.
Then I fired up the motor and set it to run at 3000rpms for 45 minutes, setting a dumbbell on the floor to brace the pedal. But I found that impractical and resorted to the old foot. I monitored oil pressure closely throughout. 56 psi to start, dropping as temperatures rose. 50psi at 5 minutes, 45psi at 10 minutes, 42psi at 15 minutes and staying near there until the 45 minute cycle was done. Revs varied a bit, oscillating between 3200 and 2800rpm, every 4-6 seconds and discharging a puff of blue smoke out the tailpipe—evidence that carbon was being scavenged? Dropped the AFM to full lean with each puff. Coolant and cylinder head temps were good under the circumstances moving up and down around 200F and finishing around 210F. I was glad it was a cold day as I had no fan to blow into the radiator. I shut the motor down and let the fan cool the motor for about 5 minutes.
I dropped the dynamic engine cleaner out of the motor and filled it with rinse oil—a pretty thin formulation looking rather like mineral oil. I ran it for 20 minutes at 3000rpm, monitoring temps and oil pressure. 66psi to start, dropping to 50psi at 5 minutes and 42 psi at 10 minutes, where it stayed for the remainder of the 20 minutes cycle. No dropouts this time—just steady running at stoich. Temps were about the same as the dynamic engine cleaner cycle but finished at 205F. I shut the motor down and let the motor cool for about 5 minutes then drained the rinse oil. It didn’t come out the same clear color as it went in. But not too dark. Distinct odor too, just as the tech on the video said. I let it drain completely over the course of about ten minutes. I just wanted it all out.
About this time a truck pulled up. I was like welp this will be someone from the construction company. I was ready to tell them I was on a public road (because I was). But nope. Just some home theatre techs that had done an install on a model home nearby. Someone at the warehouse had slipped a digit and they had been sent out with two when only one had been installed. They saw me working and thought I’d be just the kinda guy to buy the extra unit that wouldn’t be missed. I waved the offer off and they told me I had a badass car.
Realizing I had been at the job long enough to attract attention I (quickly) changed the filter to the K&N and filled the motor with Castrol Edge High Mileage 5W-30. I degreased and sopped up the inevitable small spills on the pavement (lots of recycled motor oil in the pavement in any case) and took it home. Got home and everything put away at 12:45pm.
Total time: 5 hours.
Total cost: About $350.
Benefit: Eh, who knows? Is there ever a situation where you go “wow things are so much better because of preventive maintenance!” ?
But I’ll continue to monitor oil consumption. The hope is that this process ungummed the oil control rings and that this was the problem. If high oil consumption continues, I’ll have to try something else.
I started the process at 7:45am, gathering tools and supplies. I added the can of 44K to the tank, then I went and disposed of my used oil so I would have plenty of capacity for the three drains I would need doing. I then found an out of the way spot to do the process. Thankfully there are lots of inactive residential construction sites with finished public roads around so I won’t be bothering the neighbors. As we plan to live here for the rest of our lives that’s a good idea. Sadly, by the couple of cat beds I saw tucked inside a little niche where I picked was also the site of some cat abandonment…
First I drained the motor oil, then changed the filter. The last time I changed the oil was 2093km ago. So now is a good time to do this based on my accelerated oil change schedule.
I dropped about 4 quarts of the 6 quart Dynamic Engine Cleaner into the engine. This leaves me another 2 quarts to try a half program later on if I want.
Then I fired up the motor and set it to run at 3000rpms for 45 minutes, setting a dumbbell on the floor to brace the pedal. But I found that impractical and resorted to the old foot. I monitored oil pressure closely throughout. 56 psi to start, dropping as temperatures rose. 50psi at 5 minutes, 45psi at 10 minutes, 42psi at 15 minutes and staying near there until the 45 minute cycle was done. Revs varied a bit, oscillating between 3200 and 2800rpm, every 4-6 seconds and discharging a puff of blue smoke out the tailpipe—evidence that carbon was being scavenged? Dropped the AFM to full lean with each puff. Coolant and cylinder head temps were good under the circumstances moving up and down around 200F and finishing around 210F. I was glad it was a cold day as I had no fan to blow into the radiator. I shut the motor down and let the fan cool the motor for about 5 minutes.
I dropped the dynamic engine cleaner out of the motor and filled it with rinse oil—a pretty thin formulation looking rather like mineral oil. I ran it for 20 minutes at 3000rpm, monitoring temps and oil pressure. 66psi to start, dropping to 50psi at 5 minutes and 42 psi at 10 minutes, where it stayed for the remainder of the 20 minutes cycle. No dropouts this time—just steady running at stoich. Temps were about the same as the dynamic engine cleaner cycle but finished at 205F. I shut the motor down and let the motor cool for about 5 minutes then drained the rinse oil. It didn’t come out the same clear color as it went in. But not too dark. Distinct odor too, just as the tech on the video said. I let it drain completely over the course of about ten minutes. I just wanted it all out.
About this time a truck pulled up. I was like welp this will be someone from the construction company. I was ready to tell them I was on a public road (because I was). But nope. Just some home theatre techs that had done an install on a model home nearby. Someone at the warehouse had slipped a digit and they had been sent out with two when only one had been installed. They saw me working and thought I’d be just the kinda guy to buy the extra unit that wouldn’t be missed. I waved the offer off and they told me I had a badass car.
Realizing I had been at the job long enough to attract attention I (quickly) changed the filter to the K&N and filled the motor with Castrol Edge High Mileage 5W-30. I degreased and sopped up the inevitable small spills on the pavement (lots of recycled motor oil in the pavement in any case) and took it home. Got home and everything put away at 12:45pm.
Total time: 5 hours.
Total cost: About $350.
Benefit: Eh, who knows? Is there ever a situation where you go “wow things are so much better because of preventive maintenance!” ?
But I’ll continue to monitor oil consumption. The hope is that this process ungummed the oil control rings and that this was the problem. If high oil consumption continues, I’ll have to try something else.
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Dave91alltrac
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- Jul 30, 2018
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- 25
Thank you for the detailed report. Interested to see if it improved the oil consumption.
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