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Premium Member
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Moved from general (other diesels) to general tech discussion. Here are some more details : plainly put, roughly honed 2-stroke dirt bike engines that expand a lot due to being air cooled are not the same as the micro finished water cooled car engines which don't expand as much. Short life race engine and motorcycle engines are not the same as car engines designed to last 200,000 miles.

Everything you find in teh FAQ or stickied will be technically accurate and if someone can show why it's not accurate it will get fixed immediately. Disputed facts or subjective opinion won't get moderated, but things that are blatently wrong in the forums will get moderated. Here is an article about engine break in, I haven't linked it to 1000 answered questions yet because it's not yet finished. It should answer most of your questions.

In summary, always let the engine warm up with light load driving, don't boost the turbo hard when cold until the engine is warm. The piston-ring clearances and turbo bearings aren't warmed or lubricated properly when cold.

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