Synthetic oil and break in time.
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Synthetic oil and break in time.

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    Cantard 71hallett's Avatar
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    Default Synthetic oil and break in time.

    Never used syn before but you guys allways mention red line so I bought some. Question is how many hrs should I run my reg break in oil before I switch?
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

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    Lookin' forward to this thread. Corvettes z-06's come with Mobil 1 synthetic right from the factory. I called Mobil 1 and they said didn't have to switch for break in.

    I've run 15-50 from Day 1 in my Sanger. I don't know if it's broke in yet? I'm not even sure how to tell.. There's no smoke cloud following me..
    Is it just me or are toilet seats getting smaller?

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    Resident Ford Nut Sleeper CP's Avatar
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    Quote Originally Posted by 71hallett View Post
    Never used syn before but you guys allways mention red line so I bought some. Question is how many hrs should I run my reg break in oil before I switch?
    In the dyno room it's a 10 min break-in then 4-8 power pulls ( about 10 seconds on each) and then dump the oil and replace with the syn.

    Make one trip to the lake or river and change it out.

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    steelcomp was here
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    Really depends on the condition of the engine in the beginning. Type of rings, cylinder finish, etc. are part of the equation. If it's a typical moly ring, relatively smooth finish cyl wall rebuild, then yes, the rings are basically "broken in" when you slip them in the cyl. Warm it up good and run it hard IMMEDIATELY, heat cycle the thing a few times, and build some pressure behind the rings to get them seated and you're good to go. You can change to the synthetic (and a new filter) after your first hour if you do the above. Worst thing you can do is take it out and baby it.
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    steelcomp was here
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    Quote Originally Posted by rightytighty View Post
    Lookin' forward to this thread. Corvettes z-06's come with Mobil 1 synthetic right from the factory. I called Mobil 1 and they said didn't have to switch for break in.

    I've run 15-50 from Day 1 in my Sanger. I don't know if it's broke in yet? I'm not even sure how to tell.. There's no smoke cloud following me..
    Factory engines, especially a hand built Z06 engine, are broken in before they ever leave the factory.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    Cantard 71hallett's Avatar
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    Ok thanks guys, Couple dyno guys around have started complaining that it is getting harder to break these things in, reg oil no good and syn to good.
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

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    I have had MONSTEROUS luck with Joe Gibbs break in oil. Torco makes there own version of GM's EOS that works well to.

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    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Been running mine on Syntech 10-50 since day 1, 4 years ago. Not a single problem.
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    In 03 I ran mine 20 minutes on the trailer, then changed the oil and filter and filled with Mobil1. Took it to the track and stood on it. #1 qualifier and won the race in TE. Still going stong.

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