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2012-2013 Boss 302 Mustang
Something to consider when the oil change topic happens here
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<blockquote data-quote="Grant808" data-source="post: 14227548" data-attributes="member: 74892"><p>Actually, your estimate of HT/HS properties is unfounded. The change in cSt @ 100C does not imply or relate to change in performance in HT/HS which is at 150C. Depends on the chemistry of the base stock, right? </p><p></p><p>My issue with you recommending a 10w40 for track use is that it never starts with a high HT/HS spec. Most track rats change their oil frequently enough that even rapid shear should not be an issue. One of the things I noticed that concerns me are the Lead and Iron wear from the few 10w40 samples you do have on your spreadsheet for the Boss engines. You don't have notes on the specific car/engine use posted like you do on the GT500 sheet, so I'm not sure how these cars are used. I'm most concerned that they are showing this wear if they are only used on the street.</p><p></p><p></p><p></p><p>No, as I said above...<strong><u>viscosity does not affect the specific heat of oil</u></strong>. Please go read up on this. I believe you are misinterpreting something you must have read.</p><p></p><p></p><p></p><p> I think that's just plain false. Boss/track owners seem to be the most concerned over performance and longevity over most other mustang owner groups, regardless of warrantee issues. Ford has also proved to be *exemplary* in standing behind Bosses used on the track. I think we're the group that operates with the LEAST amount of fear about warrantee issues. </p><p></p><p>I agree that chatting with 'racing experts' doesn't make them experts on these engines or lubrication. </p><p></p><p></p><p></p><p>I never disagreed about use of lighter weights on street/commuter cars. Would be nice to see some 10w30 UOA from your local Bosses, though. My only issue and concern here is with your track recommendation of 10w40. Still not sure why you'd stick with that recommendation despite the lack of data.</p><p></p><p>And if you could, please fix the quotes above, you've got a lot of what I said quoted as Race Red Boss'.</p></blockquote><p></p>
[QUOTE="Grant808, post: 14227548, member: 74892"] Actually, your estimate of HT/HS properties is unfounded. The change in cSt @ 100C does not imply or relate to change in performance in HT/HS which is at 150C. Depends on the chemistry of the base stock, right? My issue with you recommending a 10w40 for track use is that it never starts with a high HT/HS spec. Most track rats change their oil frequently enough that even rapid shear should not be an issue. One of the things I noticed that concerns me are the Lead and Iron wear from the few 10w40 samples you do have on your spreadsheet for the Boss engines. You don't have notes on the specific car/engine use posted like you do on the GT500 sheet, so I'm not sure how these cars are used. I'm most concerned that they are showing this wear if they are only used on the street. No, as I said above...[B][U]viscosity does not affect the specific heat of oil[/U][/B]. Please go read up on this. I believe you are misinterpreting something you must have read. I think that's just plain false. Boss/track owners seem to be the most concerned over performance and longevity over most other mustang owner groups, regardless of warrantee issues. Ford has also proved to be *exemplary* in standing behind Bosses used on the track. I think we're the group that operates with the LEAST amount of fear about warrantee issues. I agree that chatting with 'racing experts' doesn't make them experts on these engines or lubrication. I never disagreed about use of lighter weights on street/commuter cars. Would be nice to see some 10w30 UOA from your local Bosses, though. My only issue and concern here is with your track recommendation of 10w40. Still not sure why you'd stick with that recommendation despite the lack of data. And if you could, please fix the quotes above, you've got a lot of what I said quoted as Race Red Boss'. [/QUOTE]
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2012-2013 Boss 302 Mustang
Something to consider when the oil change topic happens here
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