SBC Oil weight
+ Reply to Thread
Results 1 to 6 of 6

Thread:
SBC Oil weight

  1. #1
    I'm No Expert Shaun's Avatar
    Join Date
    Feb 2008
    Location
    San Clemente, Ca
    Posts
    3,138

    Default SBC Oil weight

    My dad purchased a boat that came with a SBC 350. IT's not a merc, looks just like the typical SB you'd find in an old muscle car. Were changing the oil and i'm curious as to what weight oil would be good to put into it since we really know nothing about it. As far as we know, this engine is in "stock" form and it sounds like it too. I'm thinking 10w30 Mobile One Full Synth. Thoughts with out beating this to death?

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member TexasJet's Avatar
    Join Date
    Dec 2007
    Location
    College Station, Texas
    Posts
    463

    Default

    Most people use something with a higher second number. Boat motor runs at higher rpm than a car.

  4. #3
    Senior Member jetboatperformance's Avatar
    Join Date
    Dec 2007
    Location
    Atascadero Calif
    Posts
    7,463

    Default

    Oil weight applications should be dictated by the engine build as well as other factors like intended use and ambient operating temperatures , if you dont know about the build and cant find out , its a best guess deal

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Some guy obnoxious001's Avatar
    Join Date
    Dec 2007
    Posts
    3,570

    Default

    Quote Originally Posted by Shaun View Post
    My dad purchased a boat that came with a SBC 350. IT's not a merc, looks just like the typical SB you'd find in an old muscle car. Were changing the oil and i'm curious as to what weight oil would be good to put into it since we really know nothing about it. As far as we know, this engine is in "stock" form and it sounds like it too. I'm thinking 10w30 Mobile One Full Synth. Thoughts with out beating this to death?
    Try some sort of straight 40 weight, and if it's an older flat tappet cam engine, got to have higher levels of zinc or you will lose the cam.

  7. #5
    Member Dave01's Avatar
    Join Date
    Sep 2008
    Location
    NH
    Posts
    66

    Default

    I'd suggest Valvoline VR1 Racing 20W50.

  8. #6
    Off Road Badass Bonzen's Avatar
    Join Date
    Apr 2012
    Location
    San Diego
    Posts
    267

    Default

    Quote Originally Posted by Dave01 View Post
    I'd suggest Valvoline VR1 Racing 20W50.
    That's what I run in my BBC that is also basically a truck motor. Flat tappet valve trains like zinc.
    "I'd love to help you out wags, but there is larger issue concerning breast cup sizes on another thread that we have to work thru first. This subject suddenly became a non issue." - GN7

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in


Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95