Technical
| Some facts for you to read and decide - Castor oil versus Synthetic oil The benefits and drawbacks of Castor bean oil: Castor is a vegetable oil squeezed from the beans of the Castor plant, its a fatty acid ester, similar to what we see in very expensive, top of the range Polyol ester synthetics. When formulating 2 and 4 stroke engine oils using Castor as a base oil, one of the drawbacks is stearic acid. Approximately 2% of Castor bean oil is stearic acid. This portion of Castor oil produces the hard carbon and varnish deposits commonly associated with Castor based oils. The other drawback is that when using low specific gravity (race fuel only 0.735Sp.G or Aviation fuel AV-GAS), castor oil may seperate from the fuel in very cold temperatures (-35F) NOT regular pump unleaded, it will stay mixed at low temeratures in unleaded fuel. The Hotter The Better!! Above are the drawbacks of using Castor oil. At this point someone might ask "Why would anyone want to use Castor bean oil?" Before you draw any conclusions, let us explain the benefits of using Castor oil. First of all, Castor oil will stay fluid and not carbonise at temperatures over 700 degrees Farenheit. Not many fluids can make this claim, including most synthetics. Castor bean oil reacts on metal surfaces to build what is called "Platelets". The high film strength of these patelets keep the engine from having metal to metal contact points. Castor oil does one thing that neither synthetic oils nor petrolium oils can do - castor oil is attracted to heat, which means that it is drawn to the hotspots of the engine. (rings, cylinder, wall and bearings etc). When processed Castor oil does not change from season to season or vary its form depending on which region of the world it is grown in. Castor oils load carrying capability and high temerature stability are as good as any lubricant known to Man, Castor bean oils do burn a little dirtier, but on the other hand, they are a little less expensive than the high end Synthetic esters. Maxima feels that you can gain a little more performance and value for your money with Castor bean oil, than you can with the 100% polyol ester synthetic oils. Some of these oils do produce a cleaner engine, and in certain applications where there are long intervals between strip downs, this cleanliness is preferred. What Maxima has done with the Castor 927 is to look at the drawbacks of using Castor oil and to compensate for them in our formulation with cutting edge chemistry, utilising detergents, and additional rust and oxidation inhibitors. The end product is what we describe as being extremely strong, clean burning and competitively priced. |
Tips
| Castor oils can settle if left for long periods of time, so if the bike has been left a while remember to shake up the oil/petrol mixture in the tank well - also if planning a long journey remember to take plenty of oil with you, as said previously, cannot be mixed with other oils. Castor based 2-stroke is not the kind of oil you can find at service station petrol stations! When run on Castor 927 it gives off that lovely "Race-track" smell! But with the added benefits of being a modern formula with additives to enhance engine longivity. |
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