INCREASING lpg capacity ?

2oldman wrote:

dougrainer wrote:
That is dependent on the LP filler. The CORRECT way to fill a DOT tank is by weight.

Ok, I'll rephrase the question. What is the cost to refill a tank in the same area where the exchange is still $20?

That's a loaded question, and will vary much more than the cost of an exchange, at least in my area. Around here (Riverside/San Bernardino), an exchange varies from $18-$23, while the cost to refill can be anywhere from $2.50 gal to $4.00 gal. One station near me charges $2.59/gal IF you use more than 5 gallons (impossible with a 20lb cylinder), otherwise it's $3.59. So I always take 2 cylinders to refill in order to get the cheaper price.

Ultimately, it is always cheaper to refill your cylinder than do an exchange. However, the exchange is preferable when your cylinder is nearing expiration date, in otherwise poor condition, or as a matter of convenience/in a hurry, etc.:C