FlaDon
Platinum Member
Normal way to fill the tires is to remove the core like you did. It also is why you fill them at the 10 or 2 o'clock positions. When filled to that point, you remove the hose at the 12 o'clock position without spillage. You then put the core back and inflate to the correct air pressure. That keeps the tire beads seated on the rim. You need to check air pressure with the valve at the 12 o'clock position.I used the Rim Guard chart from the website to figure out how much I needed. I bought one tire's worth at a time because I only have one barrel.
The amount specified by Rim Guard took the fluid level to exactly the valve at the 12 o'clock position. Literally, I pumped all the fluid I bought into the tire and no more would fit and only a couple spoonfuls leaked out when I was done. I thought it was a fluke but it was exactly the same way for the other side a day later.
The $12 Napa adapter and a $5 drill pump was all that was required.
Also interesting... the salesman told me I could only buy it in ten gallon increments because of the way the dispensing machine works, the guy in the service shop said he could fill any amount I specified no problem.
EDIT: I removed the valve core for filling to make it go faster.
As far as corrosion or safety to the environment, Sierra anti-freeze is one of the safer things to use. I have seen what affect hundreds of gallons of 50% did in canals. Nothing but a little foam. It is propylene glycol and not ethylene glycol which is highly toxic to animals. Use of windshield washer fluid or EG antifreeze can both cause harm. Dowfrost RVR also is PG based. Rim Guard is beet byproducts and biodegradeable. Use proper safety practices when transfering the full strenght materials.