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  1. #11
    Rob VIP Member Strip Poker 388's Avatar
    My Boats:
    Hustler 388
    Join Date
    Aug 2001
    Quote Originally Posted by Raylar View Post
    At Raylar Engine we like to use Shell Rotella 15-40W for breakins, got a great zinc and additive ashless wear package and after breakin you can switch to synthetics. I also like the gallon bottles, pouring 10 quarts from quart bottles just sucks!

    Best Regards,
    Ray @ Raylar
    Thats the same as I was told on the Rotella,claims to have the highest zink level.

    The last 3 rebuilds I have used the cheap Napa straight 40 for break in, its only in there maybe about 1 hour, 5 dyno pulls or until I put a good load on it to seat the rings.Rob

    Boost makes up for Cubic Inchs

  2. #12
    Registered User
    My Boats:
    1990 28 Apache SOLD!, 1990 16 Wahoo DC, 1973 40 Kingscraft
    Join Date
    Jan 2007
    Mansfield, TX
    What about break in on a NEW long block? Rotella still OK? What about a straight HD40?

  3. #13
    Join Date
    Jan 2004
    San Diego, California


    I would use the Rotella and change it and the filter between 5 and 10 hours. Also carefully cut open the filter that is removed and spread the pleated media inside and look for debris, especially iron, steel and aluminum particles. If there is a lot, check the oil filter again within a couple of hours of use and make sure the debris stops.

    Best Regards,
    Ray @ Raylar

  4. #14
    Platinum Member Platinum Member
    My Boats:
    99 32' Active Thunder Best Revenge
    Join Date
    May 2003
    indpls. Indiana
    Thanks for the responses.


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