Search results

  1. B

    Synthetic oils in outboards - Can I use them?

    I have a 25hp & 3.3hp Mercury outboard. I would like to start using synthetic oil in them (gas & lower unit). We use alot of synthetics in critical industrial equipment where I work & the plant engineers swear they offer far superior lubrication properties (higher film strength etc?). Does...
  2. B

    Synthetic oils in outboards - Can I use them?

    I have a 25hp & 3.3hp Mercury outboard. I would like to start using synthetic oil in them (gas & lower unit). We use alot of synthetics in critical industrial equipment where I work & the plant engineers swear they offer far superior lubrication properties (higher film strength etc?). Does...
  3. B

    New Mercury 3.3hp compression

    I've recently purchased a new 3.3hp outboard. Compression is 135psi. Will this increase once I begin running the motor? If so likely how much? How low can it be before the motor begins to have trouble?
  4. B

    New Mercury 3.3hp compression

    I've recently purchased a new 3.3hp outboard. Compression is 135psi. Will this increase once I begin running the motor? If so likely how much? How low can it be before the motor begins to have trouble?
  5. B

    What year 25hp Mariner outboards?

    I have two 25hp Mariner outboards. I would like to know what year they are and if they were built my Mercury or Yamaha.<br /><br />#1 motor S/N 6634857<br /><br />#2 motor S/N A728935<br /><br />Thank you.
Top