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Posted by Cary (more from Cary) on Sat, 7 May 2016 13:55:14
In Reply to: Re: Subaru fuel economy, cheaptech [Profile/Gallery]
, Sat, 7 May 2016 05:36:58
I've got a hunch that with today's advanced and complex engines, with knock sensors, variable valve timing and (in some cases) turbo charging, that the consequences of running different grades of gas is complex, and dependent on the car and how you drive it.
I do remember driving cars where if you didn't put in premium, and hit the gas on the highway, you'd get a brrapppp of pinging. But not any more, now both cars have ping sensors and don't put up with that.
It SEEMS like the car with variable valve timing is a little zippier with premium, but it's such a small difference it may just be my subconscious trying to justify paying $10 more for a tank of premium.
I'd like to see a truly definitive and quantitative look at the issue,
across a lot of cars (old and new) and driving scenarios. I keep
thinking I should write to MotorWeek and see if they'd dig into it.
posted by 38.104.58...
Posts in this Thread:
- Subaru fuel economy, Erik919kt, Tue, 3 May 2016 19:06:46
- Re: Subaru fuel economy, Dean, Thu, 5 May 2016 08:02:05
- Re: Subaru fuel economy, Ed, Wed, 4 May 2016 09:43:35
- Driving style ?, GFW3pedals , Wed, 4 May 2016 06:19:081
- Re: Subaru fuel economy, cheaptech , Wed, 4 May 2016 04:01:15
- Re: Subaru fuel economy, AdamSAAB2kAero , Tue, 3 May 2016 19:40:22
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