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An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is both hydrophobic (does not mix with water, literally "water fearing") and lipophilic (mixes with other oils, literally "fat loving"). Oils are usually flammable and surface active. Most oils are unsaturated lipids that are liquid at room temperature.
The general definition of oil includes classes of chemical compounds that may be otherwise unrelated in structure, properties, and uses. Oils may be animal, vegetable, or petrochemical in origin, and may be volatile or non-volatile. They are used for food (e.g., olive oil), fuel (e.g., heating oil), medical purposes (e.g., mineral oil), lubrication (e.g. motor oil), and the manufacture of many types of paints, plastics, and other materials. Specially prepared oils are used in some religious ceremonies and rituals as purifying agents.

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  1. A

    Oil boiler fire after service

    Hi we had a recent service on our 40 year old Thorn oil boiler, we fire it up for the 1st time since the service todayfor got water, after 20 mins there was black smoke bellowing from the cabinet and flames inside. Going off the photos is there any obvious pointers to what went wrong? Thanks in...
  2. B

    URGENT Oil to gas conversion - Removing back boiler?

    Hi all, I am looking some advice regarding our renovations. We have just bought an old house circa late 1930's. We are looking to switch from oil to gas for various reasons one being the showers are electric. My question specifically regards a back boiler in one of the fireplaces. We have had...
  3. M

    Danfoss nozzle patterns

    Hi guys, I'm relatively new to oil and have a question regarding S/ES and H/EH nozzle patterns. I know that the ES/EH are specifically for kerosene but otherwise it appears that an S and ES are interchangeable. This has me wondering if its necessary to carry both, as it seems pointless to be...
  4. Stompi3

    Oil smell in room. Baby due soon

    Hi there. We have recently moved into a rental. We told our landlord and he says he can't smell anything. The boiler is in our spare room which we were going to make our due baby room in September. But I'm not too keen on putting baby in that room the smell it is only apparent when boiler is...
  5. T

    Oil heatslave 2 no heating

    Hi all , retired plumber here needing advice Just moved in to a house where a 1 year old green star heatslave 2 12/18 Geordie oil boiler is installed House has been empty for 5 months so technically the boilers hardly used Switched on pressure is fine , hot water fine but the heating is not...
  6. C

    Oil to Gas Boiler Conversion

    Hi everyone - Recently bought a house which is currently heated via FHW via an oil-fired boiler. Hot water is also provided by the boiler (via a tankless coil inside boiler). There are gas lines at the street, and the gas co is willing to bring gas into my house & install a meter for a $1000...
  7. G

    Oil smell on and off

    Hi again. Having successfully solved my secondary problem it’s now time to reconsider the primary fault. my boiler smells of oil, not always but usually. system is 25 years old and boiler is serviced annually. Metal tank in garden with Atkinson tank-master tap. Trianco boiler in utility room...
  8. B

    Oil Heating staying on when clock is off

    Hello, My heating is coming on when the clock is off and typically this has been a motorised valve failed but i have checked both valves, (i believe both replaced in last two years and the manual levers are solid i.e closed). Now what is strange is that full heat gets to the radiator closest to...
  9. J

    Oil burner boiler riello burner rdb HELP

    Hello alll, I have a firebird combi oil burner with the riello burner rdb in. It was working perfect up untill yesterday where it's going straight into instant lockout and won't do anything. Not fuel related because I can see it squiring out. Any guesses to what it could be ? Thank you
  10. J

    Run out of oil - lockout

    Hi all, I have recently run out of oil - the sensor in my kitchen is faulty so we’re completely empty. I’ve topped up my tank today to tide me over until delivery but my boiler (grant vortex eco wall hung) is still in lockout. I’ve read around and think I need to bleed the air from the system...
  11. R

    Help with oil combustion settings

    About 12 days ago attended a boiler lock out. Apparently another plumber was there a week before to and adjusted the photo cell. .. It is a grant wall 16/21 about 10yrs old. The ones where there is no room to move ...! Doesn't look like serviced much. Opened up and heavily sooted. Bottom baffle...
  12. L

    1st post here,which type of oil boiler -sysytem or heat only.

    Hi everyone-im a first time poster and after some info on what type of boiler to fit to my repiped house. I have an old large house which has currently got a 70kw oil boiler with a single pipe system and pipework is approx 4 inch threaded steel-mega inefficient with school type radiators-the...
  13. J

    Plastic push fittings on oil boiler?

    Was at a house today and their new oil boiler was installed in a pretty shoddy fashion. Aka Plastic tiger loop screwed to the boiler casing. And the main thing was really untidy pipework. Thrown together with a pile of grey plastic push fittings and copper / plastic pipe mix. For example...
  14. V

    Grant Euroflame Oil boiler

    Hi i hope someone can help, a couple weeks ago boiler was not staying on so i thought i would check rads and i bled them and it fired up and was working for a couple of weeks. Now it fires up and cuts out after about 5 mins. I changed the 2 port valve as pretty much every year this fails. Still...
  15. J

    Grant vortex oil boiler thermostat temperature range

    I have a new Grant Vortex 15/26 oil boiler installed. It has a boiler thermostat with no numerical information, just a wedge graphic and covers about 1/3 of a turn. I wondered if anyone could give an indication of what the range of temperatures is likely to be (I don't want to set the boiler...
  16. S

    Oil boiler cutoff valve leak, fuel has got into insulation lagging

    Worcester Danesmoor 20/25, about 18 years old. B11 burner. We came home a few days ago to find our boiler in lockout, and not wanting to restart, instead simply doing a pitiful whine. We called an engineer out yesterday who, after a quick diagnosis, worked out that the capacitor had gone. We...
  17. F

    Worcester Oil Boiler Trouble

    Hi All, I have a Worcester Danesmoor 20/25 oil boiler which is causing me lots of heartache and grief. About 3 months ago it locked out and wouldn't fire up when reset so I called out the local (but recently retired) engineer to see what he thought. He thought it was the pump so he serviced the...
  18. D

    Oil boiler and central heating install Brecon

    Hi Guys Im doing a new build near Brecon, Powys. Its going to have oil boiler, heat store (big one) and radiators. No under floor heating. The raditors will fed via plastic, JG Speedfit. They will be connected to manifolds on 1st and loft floor. Each room to have its own thermostat. Dont...
  19. Chrisae

    Oil boiler question - can't get heating on

    Hi All, Just moved into a new house which has oil central heating. There is a Honeywell thermostat in the house which I think I have worked out. The boiler is in an out house. From what I can see the heating should be on. The controls look as follows. I'm pretty sure there is some oil in the...
  20. J

    Weather compensator for Firebird Oil Boiler?

    I have a space heat only 26kw output Firebird Condensing oil boiler. I only use it for my homes space heating nothing else. Well insulated 80s renovated home. You can see there the boiler temperature stat is the simple white box. I recall about 10 years ago there used to be generic weather...