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silverseeker

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Posts posted by silverseeker

  1. My owner's manual calls for the MerCruiser spec 25W-40 oil. Ironically, Mercury Marine is the only 25W-40 out there. I'd like to run a synthetic oil in my engine, with the amount of hours it is running and trolling on the water. Other name brand oil manufacturers offer 20W-50 & 15W-40 in synthetic. I understand the differences in the numbers (been a motor head since I was 10 years old or so). In a marine application, will running a 15W make any difference than a 25W, other than the thickness of the oil when it is cold? I read somewhere in the MerCruiser manual that if an engine failure occurs due to a non-Mercury spec oil, the warranty will be voided. What does everyone else run in their MerCruiser engines these days? My engine is the 4.3L V-6.
    Have a 2000 Sylvan offshore that I have run for 5 yr's with 15/40 diesel oil in my 4.3 190 hp. with no problem's and very comfortable venturing up to 70 mile's return trip offshore. HIH-Garry :):)
  2. Have owned a 23' sylvan Offshore with 4.3 merc i/o for the past 5 yr's after retiring a 21' Islander with a 140 merc. Both are and were great craft and never had any problem's with boat's other than regular maint. issue's. Had the starcraft for over 12 yr's and is still in service on Lake Erie. As stated in earlier post's respect the water/wind's and you will have no problem's with whatever you decide on :):) Garry

  3. JB8i9.jpg

    This is my current ride-2000 Sylvan Offshore w 4.3 IO. Have had boat for 6 yr's and no issue's or problem's. Added radar arch and 9.9 hi-thrust yammy, equipped with big jon rigger's, rod holder's and planer reel's. Now have severe case of footitis and lookin for larger, this is now for sale :):) Garry

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