Looking to use BG44k for the first time, I was wondering if it's safe to put the whole 11oz can before filling up.
The labeling says it treats up to 20 gallons, since our car is only 13 gallons should I stick to around 7oz before
filling up? No other information on the can with how much to put but per gallon but it equates to 7oz for our car.

Is there something I should worry about if I was to put the whole 11oz? Would it be better or just play it safe with 7?

Cheers.

 

Put the entire can in there. Anything more than 20 gallons and it may be too diluted to be effective is all their are saying.
If less than 20 gallons would cause damage they'd have specific dilution ratios listed... the entire can is meant to be added to 1 full tank of fuel.
If you're still concerned you can go on their web site and click "contact us" and ask them directly - https://www.bgprod.com/catalog/gasol...ystem-cleaner/

 

Remember - most passenger vehicles have a smaller than 20 gallon tank.