Oil for 35HP Vanguard Big block

Discussion in 'Mechanic and Repair' started by 1998tahoe, Aug 1, 2011.

  1. 1998tahoe

    1998tahoe LawnSite Member
    Messages: 233

    Both of my mowers are coming up due for an oil change. What type if oil do I need to run in this engine? I was told by my dealer he would run Castrol SAE HD 30wt.
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  2. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Follow your dealer's suggestion and you should be fine.....
  3. jetta

    jetta LawnSite Member
    Messages: 223

    is there any zddp in straight wt oil anymore? it is bareley in multi weight now and thats not enough, we use diesel grade oil now.
  4. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    You can use anything you like, But..... As long as you use what the OEM's recommend, They should know what's best for their engines.

  5. retrodog

    retrodog LawnSite Silver Member
    Messages: 2,429

    10 30 castrol is what we normally use too. There is a few guys that run amsoil 10 30 for a little more. Opti 4 claims they double the warranty of your engine if you start with it and use it exclusivly. I am looking into it to make sure, but if they double the vanguard warranty, it would mean a 6 year warranty on all internal engine parts! Might be the best way to go...

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