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Today, 08:50 AM | #353 | |
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While my info is premium gasoline can contain a bit more energy than regular gasoline the difference is not significant. The primary benefit of premium gasoline over regular is -- for engines that require it due to higher compression/better cylinder filling (due to turbo/super charging) -- the better resistance to detonation so the engine controller can use more timing advance. In the test both test vehicle engines were tuned to run best on premium gasoline. The gain in power was I believe due to better combustion. |
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Today, 09:12 AM | #354 | |
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So you did the right thing switching from Shell to Phillips 66. |
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