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Old 05-12-2013, 01:16 AM   #31
merlinmol
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Originally Posted by Luke View Post
From what I've read the 5w-50 was just to cover all vehicles across the nation in all climates under harder driving conditions. I run the same RP HPS, what made you switch?
RP was one of my sponsors for SEMA, they gave me a case of 5w30 XPR which is their full race oil. I didn't see the sense in spending that kind of money to keep XPR so I stepped down to HPS since I don't race the car often enough to justify it. They use the same additive in both formula's.
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Old 05-13-2013, 12:42 AM   #32
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9 quarts of Mobil 1 = $100
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Old 05-13-2013, 02:10 AM   #33
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Originally Posted by re-rx7 View Post
So you can break down your synthetic oil in 3k miles? Its your car but your wasting money.
How is it wasting money if the car gets driven hard and still runs like new? Would it do the same if I changed it less frequently? Maybe. Am I willing to find out? No. Oil changes are very cheap compared to the cost of a new engine.
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Old 05-13-2013, 02:14 AM   #34
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Originally Posted by downtime! View Post
How is it wasting money if the car gets driven hard and still runs like new? Would it do the same if I changed it less frequently? Maybe. Am I willing to find out? No. Oil changes are very cheap compared to the cost of a new engine.
Because most likely you would be able run it at least 5k miles before it needs any changing under the same conditions. The idea of 3k mile oil changes was true in the old days. Oil has advanced plenty over the years. Also check out bobistheoilguy.com/

http://www.edmunds.com/car-care/stop...-your-oil.html

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Old 05-13-2013, 02:23 AM   #35
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I drive the crap outta my car. Changed the oil once so far and I'm at 17k miles! Had it 8 months.
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Old 05-13-2013, 02:35 AM   #36
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Originally Posted by Zeek View Post
I drive the crap outta my car. Changed the oil once so far and I'm at 17k miles! Had it 8 months.
Id def send in a sample and see how it looks.
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Old 05-13-2013, 08:56 PM   #37
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Always go with what works for you. I've been building and racing cars since the late 70s and have never had an oil related failure. I'll stick with 3000 mile changes.
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Old 05-13-2013, 10:17 PM   #38
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Default Oil change cost?

When it comes time to change my Amsoil ill be sending it off for analysis. I may change it at 8k just to see where I am at there.
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Old 05-13-2013, 11:45 PM   #39
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Originally Posted by downtime! View Post
Always go with what works for you. I've been building and racing cars since the late 70s and have never had an oil related failure. I'll stick with 3000 mile changes.
Exactly your living in the 70's. Oil tech ahs came a long way just like engines. Saying the oil then is like the oil now is just stupid.
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Old 05-14-2013, 12:18 AM   #40
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Originally Posted by Zeek View Post
I drive the crap outta my car. Changed the oil once so far and I'm at 17k miles! Had it 8 months.
That is just way to risky on a synth-blend oil, even if it's Motorcraft
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Old 05-14-2013, 12:46 AM   #41
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Originally Posted by DirtyD View Post
That is just way to risky on a synth-blend oil, even if it's Motorcraft
I honestly will change mine between 6-8k. It just sounds right.
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Old 05-14-2013, 12:49 AM   #42
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I'm at like 7.5k now on this oil change and its about time. Gotta go spend $80 on some Royal Purple I guess.
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Old 05-14-2013, 01:08 AM   #43
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Originally Posted by Zeek View Post
I'm at like 7.5k now on this oil change and its about time. Gotta go spend $80 on some Royal Purple I guess.
Waste of cash.
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Old 05-14-2013, 01:12 AM   #44
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Originally Posted by Dan12GT View Post
When it comes time to change my Amsoil ill be sending it off for analysis. I may change it at 8k just to see where I am at there.
Post up the results if you don't mind, Amsoil is what's going in next and I'd like to have more results to compare too.

Originally Posted by re-rx7 View Post
Waste of cash.
Compared to Motorcraft? I'd have to disagree.
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Old 05-14-2013, 01:23 AM   #45
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You really need to research motor oil....Just for shits. What makes motorcraft bad?
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