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<blockquote data-quote="spb_stan" data-source="post: 627799" data-attributes="member: 43545">If you have a chemical supply house in the area just get a small bottle of Methanol, a very simple alcohol. That is the only ingredient in Eclipse sensor cleaner, saves you $25 or more. It is a very good solvent and dries without residue but as with most solvent, it is flammable so don't light a match around the open bottle. Any alcohol based solvent should not be left open at all because it absorbs moisture from the air which reduces its effectiveness in cleaning without streaks and increases evaporation time. Get reagent grade Methanol for greatest purity and lowest water content.&nbsp; It should be cheap.Some contaminants will not be&nbsp; dissolved by alcohol but will be by distilled water. If you need to use distilled water apply is with the lightly moistened&nbsp; applicator and clean normally and then do it again using the alcohol only. Water is absorbed by the alcohol.The dirt does not look like any normal dirt. Is this photo of the sensor itself or by the sensor?&nbsp; If it is on the sensor itself, it should be visible with the unaided eye.</blockquote>

[QUOTE="spb_stan, post: 627799, member: 43545"] If you have a chemical supply house in the area just get a small bottle of Methanol, a very simple alcohol. That is the only ingredient in Eclipse sensor cleaner, saves you $25 or more. It is a very good solvent and dries without residue but as with most solvent, it is flammable so don't light a match around the open bottle. Any alcohol based solvent should not be left open at all because it absorbs moisture from the air which reduces its effectiveness in cleaning without streaks and increases evaporation time. Get reagent grade Methanol for greatest purity and lowest water content. It should be cheap. Some contaminants will not be dissolved by alcohol but will be by distilled water. If you need to use distilled water apply is with the lightly moistened applicator and clean normally and then do it again using the alcohol only. Water is absorbed by the alcohol. The dirt does not look like any normal dirt. Is this photo of the sensor itself or by the sensor? If it is on the sensor itself, it should be visible with the unaided eye. [/QUOTE]

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