CRF 505 - whole bottle or half?

When you use pray and pour... The answer to your question is how strong do you want your prayers to be... And keep in mind sometimes the recommended prayer dosage is often more effective than a double prayer dosage, especially when it comes to how much you have to pay to pray as you pour.

 

One guy on Reddit says use full bottle, regardless of engine size:

https://www.reddit.com/r/ToyotaTundra/s/rYpHW0rGiV

then idle for 20 minutes (minimum), then change oil/filter.

To maintain idle, the maintenance mode procedure is described in video #11, here:

Nutz About Bolts Prius Maintenance Videos | PriusChat

Reddit quote follows:

BlackFeatherRS (OP):


Wow!
How did this engine come to be carboned up so bad with such low mileage?
You could try it again...

How To Use 505CRO:

Few items to note:
-No matter the oil capacity of your engine, one bottle of 505CRO is needed per service. For example, and engine with an oil capacity of 5 quarts and an engine with an oil capacity of 10 quarts each use one bottle of 505CRO.
-505CRO does not dilute the oil, it is a cleaning additive that improves your engine oil.
-Do not drive the vehicle once the treatment has been added to the engine. It is designed to be used at idle.
-Add 505CRO to your engine crankcase by pouring into the engine oil fill.
–For regular maintenance; Idle the engine for 15 – 20 minutes
–For repairs: Idle engine for 40 minutes, no more than 45 minutes.
-Raise engine RPM to 2500 – 3000 for short periods of time during the treatment cycle.
-Drain engine oil.
-Replace engine oil filter and refill engine oil with new.

^ Addendum: tried with iphone to italicize the above, for about 5 minutes, with maddeningly frustrated outcome. Switched to pc, took about 5 seconds.

 

Ah ok, was unclear on that.