How long for Neutra to stay in engine?

[Mystic]

I would like to try Neutra to clean out my engine. I have heard that a person should use i 0z. per quart of oil. Is this correct?

And how long should the Neutra stay in the engine? 100 miles before an oil change? 500 miles before an oil change?

Also, can Neutra be used if Auto-RX is in the engine?

 

[UncleS2]

If Auto-Rx is already in the oil, I wouldn't mix Neutra in with it. Might be fine, but until I learn from a reliable source that it's OK, I wouldn't do it in my car. Besides, if A-rx is in the oil, there should be no need for the Neutra.

~1 oz/qt is what's printed on the yellow 12 oz bottles. For best results, I'd say at least 400 to 500 miles before oil change.

And yes, I have personal experience with both, & Lube Control too(also Fuel Power). All 4 products are in my carport closet!