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2015+ Shelby GT350 Mustang
Purchasing a used '17 GT350 what should I watch out for? ie Oil, etc.?
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<blockquote data-quote="ANGREY" data-source="post: 16359114" data-attributes="member: 188865"><p>I think you guys are mixing a bunch of different issues with nothing but anecdotal evidence to support it.</p><p></p><p>The oil consumption issue is pretty much down to 3 most likely candidates. Suspended oil through the PCV (which is small, but noticeable), oil bypass across the rings or what a lot of people think are valve seats and guides that leak.</p><p></p><p>in any case, "tune" isn't going to move the needle on any of those very much. If it's leaking valve seats, your tune has very little to do with it. If it's suspended oil going through the CPV return, tune isn't going to matter. And blow by the rings (especially if it's because the cylinders aren't warm and expanded fully) isn't going to be affected by tune.</p><p></p><p>My car has been "tuned" for nearly 20k miles and I don't get excessive consumption. There are cars that consume oil straight off the lot with nothing but OEM conditions. It's a hit or miss crap shoot and if Ford knows, they ain't saying. But the notion that aftermarket tunes are causing this doesn't reconcile all the cars that have had problems that haven't been touched by anything aftermarket.</p><p></p><p>As far as compromised plasma, I've seen vids of people online who again, had their car tuned and those who fried the cylinder coating and hadn't done anything to the car.</p><p></p><p>In fact, I'd offer a counterargument. By running E-85, my motor is probably "safer" than the factory tune on 93, especially under hot IAT conditions, particularly against knock and preignition or conditions that create excessive pressure on the rings. Furthermore, I test my E-85 every time I fill. There's virtually no way to test 93 and determine it's qualitative or chemical properties at the pump. Buying 93 at the pump is WAY more of a crap shoot and roll of the dice than those of us that can test the ethanol content (and therefore quality) of E-85. One bad batch of 93 on a hot day and the tune isn't going to matter, it'll overwhelm the knock retard and beat up on components.</p></blockquote><p></p>
[QUOTE="ANGREY, post: 16359114, member: 188865"] I think you guys are mixing a bunch of different issues with nothing but anecdotal evidence to support it. The oil consumption issue is pretty much down to 3 most likely candidates. Suspended oil through the PCV (which is small, but noticeable), oil bypass across the rings or what a lot of people think are valve seats and guides that leak. in any case, "tune" isn't going to move the needle on any of those very much. If it's leaking valve seats, your tune has very little to do with it. If it's suspended oil going through the CPV return, tune isn't going to matter. And blow by the rings (especially if it's because the cylinders aren't warm and expanded fully) isn't going to be affected by tune. My car has been "tuned" for nearly 20k miles and I don't get excessive consumption. There are cars that consume oil straight off the lot with nothing but OEM conditions. It's a hit or miss crap shoot and if Ford knows, they ain't saying. But the notion that aftermarket tunes are causing this doesn't reconcile all the cars that have had problems that haven't been touched by anything aftermarket. As far as compromised plasma, I've seen vids of people online who again, had their car tuned and those who fried the cylinder coating and hadn't done anything to the car. In fact, I'd offer a counterargument. By running E-85, my motor is probably "safer" than the factory tune on 93, especially under hot IAT conditions, particularly against knock and preignition or conditions that create excessive pressure on the rings. Furthermore, I test my E-85 every time I fill. There's virtually no way to test 93 and determine it's qualitative or chemical properties at the pump. Buying 93 at the pump is WAY more of a crap shoot and roll of the dice than those of us that can test the ethanol content (and therefore quality) of E-85. One bad batch of 93 on a hot day and the tune isn't going to matter, it'll overwhelm the knock retard and beat up on components. [/QUOTE]
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2015+ Shelby GT350 Mustang
Purchasing a used '17 GT350 what should I watch out for? ie Oil, etc.?
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