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- Q233157 subject Q8414586.
- Q233157 subject Q8642390.
- Q233157 abstract "Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, 2-stroke oil or petroil) is a special type of motor oil intended for use in crankcase compression two-stroke engines. Unlike four-stroke engine whose crankcase is closed except for its ventilation system, two-stroke engines use the crankcase as part of the induction tract, and therefore, oil must be mixed with gasoline to be distributed throughout the engine for lubrication. The resultant mix is referred to as petroil. This oil is ultimately burned along with the fuel as a total-loss oiling system. This results in increased exhaust emissions, sometimes with greyish-blue smoke and/or a distinctive odor.The oil-base stock is either petroleum, castor oil, semi-synthetic or synthetic oil and is mixed (or metered by injection) with petrol/gasoline at a fuel-to-oil ratio ranging from 16:1 to as low as 100:1. To avoid the high emissions and oily deposits on spark plugs, modern two-strokes, especially for small engines such as garden equipment and chainsaws, may now demand a synthetic oil and can suffer from oiling problems otherwise.Engine original equipment manufacturers (OEMs) introduced pre-injection systems (sometimes known as "auto-lube") to engines to operate from a 32:1 to 100:1 ratio. Oils must meet or exceed the following typical specifications: TC-W3TM, NMMA, [API] TC, JASO FC, ISO-L-EGC.Comparing regular lubricating oil with two-stroke oil, the relevant difference is that two-stroke oil must have a much lower ash content. This is required to minimize deposits that tend to form if ash is present in the oil which is burned in the engine's combustion chamber.Since the 1980s different types of 2 stroke oil have been developed for specialized uses such as outboard motor 2 strokes, premix 2 stroke oil, as well as the more standard auto lube (motorcycle) two stroke oil.".
- Q233157 thumbnail 2stroke_oil_bottle.JPG?width=300.
- Q233157 wikiPageExternalLink two-stroke.htm.
- Q233157 wikiPageWikiLink Q1455803.
- Q233157 wikiPageWikiLink Q152323.
- Q233157 wikiPageWikiLink Q193340.
- Q233157 wikiPageWikiLink Q193784.
- Q233157 wikiPageWikiLink Q1949814.
- Q233157 wikiPageWikiLink Q22656.
- Q233157 wikiPageWikiLink Q233157.
- Q233157 wikiPageWikiLink Q267558.
- Q233157 wikiPageWikiLink Q3129456.
- Q233157 wikiPageWikiLink Q320173.
- Q233157 wikiPageWikiLink Q337492.
- Q233157 wikiPageWikiLink Q39558.
- Q233157 wikiPageWikiLink Q7543054.
- Q233157 wikiPageWikiLink Q7827939.
- Q233157 wikiPageWikiLink Q8414586.
- Q233157 wikiPageWikiLink Q8642390.
- Q233157 wikiPageWikiLink Q901154.
- Q233157 wikiPageWikiLink Q902134.
- Q233157 comment "Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, 2-stroke oil or petroil) is a special type of motor oil intended for use in crankcase compression two-stroke engines. Unlike four-stroke engine whose crankcase is closed except for its ventilation system, two-stroke engines use the crankcase as part of the induction tract, and therefore, oil must be mixed with gasoline to be distributed throughout the engine for lubrication. The resultant mix is referred to as petroil.".
- Q233157 label "Two-stroke oil".
- Q233157 depiction 2stroke_oil_bottle.JPG.