Professional EGR Cleaning Resources

Of course. I had somehow forgotten about the fuel pump assembly sending all those signals and data to the power control and other modules.

 

So you make a lot of wild claims that even the Snake Oil salesmen don't make.
You must really like pouring extra dollars in tiny bottles into your tank.....

If you believe all that happens in your car with these products,,, fine.
If you want to convince others. you'll need accurate testing.

How can it be that me and my bud, with a fleet of Prii and close to a million miles in Prii, never pour snake oil into the fuel?
And we've never had fuel injector specific problems.
Hint: Top-Tier gasoline has a lot of detergents already.

True, it's possible for a fuel filter to go bad and start leak the crud past. That's very rare I'm sure.
So what if rust or dust got through the fuel filter, do you think this snake oil will dissolve those substances?

Carry on.
The Placebo Effect works in so many different circumstances.

 

OK, I feel you are reputable!
I never heard of all this feedback from the 'fuel pump'???

Wouldn't it be at most:
fuel level
fuel temp
fuel pressure, possibly triggering a fuel filter fault?
Motor rpm, current, temp??
Alcohol percentage? not likely, but E85 cars have such a sensor.

And Snake Oil may help with whatever?

 

That would be quite extravagant compared to what's actually back there: a fuel pump that the car sends 12 volts to and hopes for the best, and a level float making a variable resistance the fuel gauge can use. Also, elsewhere on the tank, there is a pressure sensor that gets used during the evap leak test (which happens about five hours after you shut the car off, and sometimes leads to PriusChat posts like "I went in the garage late at night and my Prius was humming").

 

Sorry, I thought here you were implying there's lots of data...
were you joking with the snake oil guy?

 

They always say tone is hard to convey in writing.

 

Thanks for this bit of info!
I did not know this and it's one more thing that runs down the 12V battery while parked.
Have you ever calculated how much power this 'evap leak test' uses?
It's one more reason why the 12V battery has to be the size it is.

 

The test runs a small pump/fan for up to about 20 minutes and clicks a valve or two. And just once, five hours after you shut the car off.

 

I love my snake oil.

 

Got it.

What's your favorite flavor?

 

It's just like chicken.

 

Berrymans is good. I think. Usually I add a can when the tank is low. Drive it for a while then add fuel to it. I have also used the cheapest one I could find from Walmart, as well as, Lucas. I've found that it does help with getting better mileage. I'm thinking that it will help to put off replacing injectors and maybe the fuel pump. It's just the way I think.

 

But is there any evidence of fuel injectors and fuel pumps going bad in these, or any modern cars?
By the time you add up all these extra products at each fill up, you could buy a set of brand new injectors.
Just don't hold your breath...

I've had a lot of high mileage cars and the only ones that required fuel injector maintenance were the VW TDI's.

 

True, Berryman's run about $5 a can. But, until I decide to pay a lot of bucks for an OEM injector replacement I'll go cheap and use the snake oil. The injector spray ports (nossels) can get plugged over time. And since I experience a difference of improved milage/ performance after using the snake oil, I surmised that there is a correlation between the two.
It's just a supplimation.

 

Causation does not equal correlation. Or is it the other way around?

The Placebo Effect has been proven to work! Even when the patients know if they're getting the placebo or the real deal. Look it up!
I don't think it works with mechanical stuff, though....

I know I can't get two exactly the same MPG numbers per tankful. I wouldn't know how to measure 'performance' increases without accurate, repeatable testing.

Carry on. If you're happy spending $5 more per fill up and it brings you joy, please continue. Only you know you!

I hate putting gas in my prius.
Hate that old fashioned smell. I try to stand upwind from the fumes

I'd really hate throwing those little plastic bottles away at each fill up.
They're not recyclable. Plus, I'm a cheapazz. Why throw extra dollars down that smelly hole if ,,, it's questionable?
Don't get any on ya. It's probably nasty stuff.

It's my backup/road trip car. (South Padre Island, here I come,,, soon! Go Starship!!)

 

I finally got Prius serviced and SW updated. I did not visit the shop myself so i only know what receipt say:

Before update:
34717200
A4701000

After update:
34717500
A4701000

i googled that 34717500 and found Toyota TSB EG-0127T-1014 ”Cylinderhead gasket failure under severe driving conditions”. That document states that high mileage Prius may suffer from gasket failure under heavy driving conditions. And ”Engine electrical waterpump logic is upgraded to avoid symptom from occuring”. Whatta ya know, whatta ya say! Then it states the calibration ID’s and if engine is ZVW30 and ID is 34717200 ”minimum calibration ID” is 34717500.

 

DESCRIPTION OF PHENOMENON
Some customers may experience and report one or more of the below phenomena:
 Engine coolant consumption
 White smoke from the exhaust caused by coolant consumption
 Rough engine running / misfire caused by coolant consumption
In some unique severe driving conditions, the engine coolant temperature can rise above a specific value, in certain areas of the engine block.
If this specific temperature rise occurs frequently (severe driving), in combination with higher vehicle mileage (vehicle mileage above 200.000km), there is a risk the cylinder head gasket may fail.
Classification of severe driving/usage conditions:
 Long period of engine idle time e.g. taxi use, city parcel delivery, traffic jam, etc
 High percentage of “stop / take-off‟ (go) operation e.g. traffic jam, city / door-to-door driving, etc
 High percentage of high speed / high load operation
 Use of low quality engine coolant
 Vehicle used for towing
PRODUCTION CHANGE
The engine electrical water pump logic is upgraded to avoid this symptom from occurring.