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The Water Cooler
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Amsoil Motor Oil
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<blockquote data-quote="swampratt" data-source="post: 3931286" data-attributes="member: 15054"><p>Royal purple on the shelf at the store is not the same as some of the stuff you order.</p><p>In a "race" engine Royal purple is frowned upon.</p><p></p><p>Could be they got the stuff on the local shelf.</p><p>I have had 2 friends switch to the shelf Purple and both lost their engines and the builder of the engine told both of them that Royal purple has destroyed many engines and they should never buy it.</p><p></p><p>I did test the shelf Royal purple in my Corolla back before 2007 and it got the same MPG as the Mobil 1 synthetic.</p><p>I was just leaving each oil and filter in the engine for 1,000 miles and testing MPG.</p><p></p><p>I figured if it reduced friction then MPG would increase.</p><p>I found this to be true and the smaller the engine the more difference it makes.</p><p>The MPG range was 27 to 35 MPG between different oils I tested.</p><p>Synthetic had the best MPG.</p><p>I tried Mobil 1 synthetic in different weights also.</p><p>0-20, 5-20, 5-30 and no gain in MPG with the lower weight.</p><p></p><p>My son would take the very clean used oil and put it in his Honda.</p></blockquote><p></p>
[QUOTE="swampratt, post: 3931286, member: 15054"] Royal purple on the shelf at the store is not the same as some of the stuff you order. In a "race" engine Royal purple is frowned upon. Could be they got the stuff on the local shelf. I have had 2 friends switch to the shelf Purple and both lost their engines and the builder of the engine told both of them that Royal purple has destroyed many engines and they should never buy it. I did test the shelf Royal purple in my Corolla back before 2007 and it got the same MPG as the Mobil 1 synthetic. I was just leaving each oil and filter in the engine for 1,000 miles and testing MPG. I figured if it reduced friction then MPG would increase. I found this to be true and the smaller the engine the more difference it makes. The MPG range was 27 to 35 MPG between different oils I tested. Synthetic had the best MPG. I tried Mobil 1 synthetic in different weights also. 0-20, 5-20, 5-30 and no gain in MPG with the lower weight. My son would take the very clean used oil and put it in his Honda. [/QUOTE]
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