If your oil tank has been touching a wall for 31 years, just call someone to
get it replaced. If not, put in something like ComStar Super Heat '8 in 1'
or Hot '4 in 1' treatment. The person who told you not to treat it with
anything is seriously misinformed.


wrote in message
oups.com...
i would check for rust when the oil level is low, assuming a steel tank
your near its design life.

trying to dissolve crud may move it to your furnace clogging it and
worse open leaks in rust