12-13-2015, 11:58 AM | #1 |
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i8 - Mechanical sympathy
The little 1.5L engine is fairly stressed at 150bhp / litre
Not only that but is expected to fire into life and give its all in a second of starting. Have BMW given this engine a chance of a reasonable lifetime ? Oil pre heating or similar. I for one won't be giving mine when I get it welly without letting the engine run for a while. That's one of the reasons I didn't go used or ex demo, most owners selling a car they know they aren't keeping are not going to be concerned about engine life ! I've always looked after my cars, had a M3 CSL from new not a single engine problem in 45k miles (including 2k on track shifting at red line) and used no oil between oil changes. |
12-13-2015, 03:19 PM | #2 |
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I believe BMW runs these engines on the bench before they are installed in the car. Turbocharged engines are not stressed at low turbo boost.My M6 Gran coupe lowers the rev limit based on operating temperature.
I suspect the same holds true for the I8. |
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12-14-2015, 02:44 PM | #3 | |
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There's probably a reason why most cars, even at the performance end of the spectrum, don't come with oil thermometers anymore. Either it's handled automatically, as one post here suggests, or it just doesn't matter. |
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12-15-2015, 01:39 PM | #4 | |
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Engine oil technology is the savior of engines today I'm sure 30,000 miles between oil changes !! In the old days (pre 70) it was 3000 and 150 miles per pint of oil was considered not excessive (1963 Mini cooper "S" road test) |
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12-16-2015, 06:52 AM | #5 | |
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