ComStarβs Super Heat has been the choice of professionals for over 45 years. Only Super Heat provides 8 treatments in 1. Super Heat melts ice, lowers the pour point in fuel tanks, controls waxing and jelling, eliminates water, dissolves sludge, cleans parts, diminishes soot build-up, and reduces bacteria breeding grounds. Fuel oil treatments provide many benefits for homeowners. Over time, build-up from carbon, water, and other impurities is nearly inevitable for home fuel tanks. Carbon build-up in the tankβs nozzle decreases its heating efficiency. Using Super Heat regularly prevents carbon from clogging up nozzles. Water commonly finds its way into fuel tanks as well. When untreated, this can result in bacterial growth and rust. Super Heat will prevent rust from building up, which creates sludge and causes many issues for the tankβs filtration system. For homes located in areas with harsh winters, jelling is bound to happen. Apply Super Heat to prevent fuel from crystallizing to clog and damage the tank in temperatures below freezing. Use Super Heat regularly to help eliminate all problems relating to cold weather, combustion efficiency, and carbon build-up with just one product. Apply 8 oz. with each refill of 275 gallons of fuel.
- ComStarβs Super Heat has been the choice of professionals for over 45 years. Only Super Heat provides 8 treatments in 1. Super Heat melts ice, lowers the pour point in fuel tanks, controls waxing and jelling, eliminates water, dissolves sludge, cleans parts, diminishes soot build-up, and reduces rust.
- Fuel oil treatments provide many benefits for homeowners. Over time, build-up from carbon, water, and other impurities is nearly inevitable for home fuel tanks. Carbon build-up in the tankβs nozzle decreases its heating efficiency. Using Super Heat regularly prevents carbon from clogging up nozzles.
- Water commonly finds its way into fuel tanks as well. When untreated, this can result in rust. Super Heat will prevent rust from building up, which creates sludge and causes many issues for the tankβs filtration system.
- For homes located in areas with harsh winters, jelling is bound to happen. Apply Super Heat to prevent fuel from crystallizing to clog and damage the tank in temperatures below freezing.
- Use Super Heat regularly to help eliminate all problems relating to cold weather, combustion efficiency, and carbon build-up with just one product. Apply 8 oz. with each refill of 275 gallons of fuel.


















Viendoto’ –
My burner and filter previously, on occasion would get clogged with sludge and require a blowout to return to normal. This usually happened when I had a little less than a 1/4 tank. The boiler would run for 3-5 minutes, then gurgle and shutoff. Last heating season I started putting 1/2 a bottle of Comstar super heat in at a 1/4 tank. I stick the tank and usually can feel the sludge on the bottom; currently, Iβ touching the bottom and no sludge feeling. Burner has been running fine and I use about 4 onceβs prior to each delivery. Could cost less, but so far seems to do the job. Followup: Super Eight continues to keep sludge and or water from compromising my burner; Iβve conducted water paste teste since using and there is no evidence of water.: When I stick the tank , I touch bottom?(metallic bottom sound) , no sludge feeling. Unfortunately, I was about to buy again, but even though the advertised price is $12.07which should cost 36.96 is suddenly $33 and change. Iβll look elsewhere
gobdeep –
Update 1 year later: it’s that time of the year again. Leaves are changing colors, nights are cool in the mid 40’s, and my heating system is coming back to life after many months of hibernation. I used another bottle of this at the start of fall and once every two or three fill ups. I am still impressed by this product and it is keeping our heating system in tip-top shape.Original review: I had a clogged filter and, while waiting for my new filter to arrive, tried a bottle of this in my heating oil (diesel) tank. Wow! What a difference. My entire filter looked brand new. Completely impressed after just one use. Iβll be using this product regularly from now on.
Benz Diesel –
Must have cleaned the tank and lines some as the filter starting clogging up after about 3 or 4 days after adding it to the tank. Don’t know if it cleans the burner and combustion area. It doesn’t make the fuel oil last longer.
hunter –
I’ve worked his product before. All other times when shipped it was shipped wrapped in multiple bags and token care of how was ship. Receive package today single bag product leaking through the bag and smelling the whole house up when delivered. People need to be spayed special attention to Packaging fuel items in future.
Paul Raymond –
I added a full bottle to the fuel tank before it was filled completely. So far the furnace is working fine.
William J. Prah –
I’ve been using this product for the past 7 years. Just one bottle, treats a 275 gallon tank of oil. It helps stabilize the oil, eliminate water, kills sludge and bacteria (mold and slime), and has kept my oil flowing smoothly from the tank to the furnace all this time. I don’t start the heating season without it!
lawrence s. bernstein –
Not sure if it works or not but Hoping for the Best..
Cliff –
Does wonders for indoor and outdoor oil tanks. Used for years.