SBT Jetski Engines, Parts & Accessories

Results 1 to 8 of 8
  1. #1
    Joined
    May 2008
    From
    Michigan
    Posts
    18

    Default Correct 2-cycle oil

    I have a 93 and a 95 Sea Doo with Rotax engines. According to the owners manual, the injection oil must be an API-TC rating, low ash. They specifically indicate that you must not use any 'no ash' NMMA TC-W or TC-WII oils or severe engine damage may occur.

    Unfortunately, all of the stores that I have purchased the oil from no longer carry this oil; Citgo Sea and Snow is what I've used historically. What they do have is a "no ash" TC-W3 oil that says is safe to use in place of TC-W, TC-WII OR API-TC oils. I am not finding any API TC low-ash rated oil.

    TC-W3 was not around when these ski's were made yet it is a no-ash oil that the manual specifically states as a 'don't use' oil. You can see the rub between the book and the rating on the TC-W3 oil that says it meets/exceeds the API-TC rating. That said, do you know if it is o.k. to use this no-ash oil without risk to the engine?

  2. #2
    Joined
    Aug 2001
    From
    Las Vegas, Nevada
    Posts
    1,220

    Default Re: Correct 2-cycle oil

    Any MOTORCYCLE injector oil will meet the requirements for API-TC. Go to a motorcycle shop and ask for a high quality 2-stroke injector oil. OR, I personally prefer Maxima Super-M injector oil. or Maxima Marine Pro injector oil.
    John Kubiak
    Powersports Technical Training Professional
    Las Vegas, Nevada
    Sea-Doo Tech 13736
    PWC Tech since 1988 (22 years)
    PowerSports since 1976 (34 years)
    NEVER BUY TIRES AT A "BLOW-OUT" SALE
    Please do not use Private Messaging, use the forums.

  3. #3
    Joined
    May 2008
    From
    Michigan
    Posts
    18

    Default Re: Correct 2-cycle oil

    Thank you. So even if it is a no-ash vs. a low-ash oil, it's o.k. to use with the TC-W3 rating?

  4. #4
    Joined
    Aug 2001
    From
    Las Vegas, Nevada
    Posts
    1,220

    Default Re: Correct 2-cycle oil

    Quote Originally Posted by MTG
    Thank you. So even if it is a no-ash vs. a low-ash oil, it's o.k. to use with the TC-W3 rating?
    I NEVER SAID THAT!
    John Kubiak
    Powersports Technical Training Professional
    Las Vegas, Nevada
    Sea-Doo Tech 13736
    PWC Tech since 1988 (22 years)
    PowerSports since 1976 (34 years)
    NEVER BUY TIRES AT A "BLOW-OUT" SALE
    Please do not use Private Messaging, use the forums.

  5. #5
    Joined
    May 2008
    From
    Michigan
    Posts
    18

    Default Re: Correct 2-cycle oil

    Then what are you saying regarding the ASH content???

  6. #6
    Joined
    Aug 2007
    From
    GA
    Posts
    43

    Default Re: Correct 2-cycle oil

    The specified type is TC...TC is not TC-W3; TC-W3 is not spec'd to operate in service temps as high as TC is designed for.

    Regardless of ash content, TC-W3 is not meant for use in a Rotax engine, from all that I've been able to read.

    BTW, you can get Quicksilver **PWC** Oil at Walmart...TC rated, specifically mentions appropriate for Sea Doo engines. It ain't that hard ;-)

  7. #7
    Joined
    Aug 2001
    From
    Las Vegas, Nevada
    Posts
    1,220

    Default Re: Correct 2-cycle oil

    Let me try to shed some light on this confusing subject

    The original reason for API-TC oil was to protect the ROTARY VALVE DISK and the rotary valve shaft assembly (both spin at crankshaft speed). Without this spec for oil, the rotary valve was subject to galling and siezing in the valve housing and the brass alloy gear could possibly gall or strip if the oil didn't protect it properly. The rotary valve design has been used in motorcycles and snowmobiles for a few decades and there were many high quality non-marine application oils developed for rotary valve engines. The Rotax mineral based oil is a good example of this type of oil (API-TC is actually a non-marine application oil specification)

    This is where people become confused....because a Sea-Doo is a "marine" application, people attempt to use "marine" oils instead of the high quality motorcycle and/or snowmobile type oils that have been specified. I used to use Bel-Ray Si-7 injector, and later changed to Maxima Super-M injector oil in my Sea-Doo's. Once Sea-Doo released the 787/800 engine with rotary valve and the RAVE system (again a snowmobile design) there was a requirement for an oil that left less residue in the exhaust ports in order to keep the RAVES from sticking and not working, and Rotax had already spec'd the XP-S synthetic for that application. (Maxima Super-M also met the same spec's because of the sleds).
    John Kubiak
    Powersports Technical Training Professional
    Las Vegas, Nevada
    Sea-Doo Tech 13736
    PWC Tech since 1988 (22 years)
    PowerSports since 1976 (34 years)
    NEVER BUY TIRES AT A "BLOW-OUT" SALE
    Please do not use Private Messaging, use the forums.

  8. #8
    Joined
    May 2008
    From
    Michigan
    Posts
    18

    Default Re: Correct 2-cycle oil

    John, this is excellent information. Thanks!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 97 xp
    By new XPer in forum Sea-Doo
    Replies: 9
    Last Post: 10-03-2007, 07:20 PM
  2. 2 Cycle Oil
    By Timd in forum Yamaha
    Replies: 8
    Last Post: 08-21-2007, 11:13 PM
  3. Need professional opinion about oil type
    By Ozzie Seadoo in forum Sea-Doo
    Replies: 4
    Last Post: 01-09-2006, 01:24 AM
  4. Replies: 2
    Last Post: 08-10-2005, 12:37 PM

Posting Permissions

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