| Hence some prefer a low ash formulation and some prefer an ashless formulation. |
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| The samples were treated with diluted HNO3 and deionized water, and then filtered through an ashless Whatman 41 filter paper. |
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| It is recommended for use in any 2-cycle engine that specifically requires an ashless type oil. |
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| The ashless formulations do not create these deposits in water cooled engines and are the required product for this application. |
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| The ashless formulation provides excellent piston deposit control and port cleanliness. |
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| In addition, the ashless formula minimizes spark plug fouling and engine pre-ignition. |
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| Improvements in lubricants such as ashless dispersant oils, spark plugs and use of oil filters have also been vital to predicting longer periods between engine overhaul. |
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| It is formulated from select, highly refined mineral base oils, a polyalphaolefin synthetic base oil, and ashless performance additives providing outstanding engine cleanliness, wear protection, and corrosion protection. |
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| The reaction system was allowed to cool to room temperature, and the carbonized materials were filtered off using Whatman filter paper number 3, ashless 11 cm. |
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| Published data from quiescent microgravity experiments on thin ashless filter paper and thick PMMA are also compared with the prediction of the analysis. |
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| The CuFe2O4 adsorbent after the batch adsorption was filtered using ashless filter paper, washed with deionised water and then heated in order to eliminate the adsorbed MG dye molecules and restore adsorbent surface. |
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| Petro-Canada Outboard Motor Oil is an ashless fluid designed for use in high performance, water-cooled, two-stroke cycle engines used to drive outboard motors. |
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| Despite the advent and wide-spread use of ashless dispersant aviation engine oils, many operators prefer to continue the use of straight mineral oils, which have provided excellent service for many years. |
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