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The Water Cooler
General Discussion
Anyone ever use amsoil in their ride
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<blockquote data-quote="sharkbait" data-source="post: 1485515" data-attributes="member: 3999"><p>On my last patrol boat we had oil viscosity testing equipment, one day my chief got curious about the "recommended oil change interval" and had us test the viscosity hourly while running (yes we could draw samples off of the engines while running). Chief said we weren't going to change the oil until we saw a 5% degradation in viscosity, at 2 1/2 times the recommended oil change interval as measured in operating hours he gave up and had us change the oil (we had about a 2% degradation in viscosity at that point). What I haven't told you yet is that heat is what breaks down oil (most of you already know that) and our engines were twin turbo diesels and at running speeds during the day the engine room was 145-150 degrees so this was pretty much a worst case scenario. </p><p></p><p>You didn't make a bad decision following the "3k rule", you did what was recommended, unfortunately it was recommended by companies in the business of selling motor oil. I run synthetic in my Dodge and usually go about 6k miles before I change, at 6k the viscosity is still good but it is blacker than my heart at that point.</p><p></p><p>YMMV</p></blockquote><p></p>
[QUOTE="sharkbait, post: 1485515, member: 3999"] On my last patrol boat we had oil viscosity testing equipment, one day my chief got curious about the "recommended oil change interval" and had us test the viscosity hourly while running (yes we could draw samples off of the engines while running). Chief said we weren't going to change the oil until we saw a 5% degradation in viscosity, at 2 1/2 times the recommended oil change interval as measured in operating hours he gave up and had us change the oil (we had about a 2% degradation in viscosity at that point). What I haven't told you yet is that heat is what breaks down oil (most of you already know that) and our engines were twin turbo diesels and at running speeds during the day the engine room was 145-150 degrees so this was pretty much a worst case scenario. You didn't make a bad decision following the "3k rule", you did what was recommended, unfortunately it was recommended by companies in the business of selling motor oil. I run synthetic in my Dodge and usually go about 6k miles before I change, at 6k the viscosity is still good but it is blacker than my heart at that point. YMMV [/QUOTE]
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Anyone ever use amsoil in their ride
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