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Thread: Which engine oil

  1. #1
    The_Walrus
    Guest

    Which engine oil

    [smiley=help.gif] My Yammi 25/4 is now out of warranty & I plan to do basic servicing myself.

    For the engine oil, can I use a good automotive oil or should I stick with brand names ie Yammalube?

    What oils do members use?

    Luc

  2. #2

    Re: Which engine oil

    Mate I'm in the same situation as you.My motor will be out of warranty shortly also.I have been advised definately not to use automotive oil.A pro fisherman around my way has a Mercury 4/S and he was telling me a while ago as soon as the motor is out of warranty to get out of Mercury oil and go to Castrol 4/S oil.Apparently he had a lot of trouble with his motor and it was because of the Mercury oil.
    How much truth is in this I don't know,but I will be looking into it when my motor is out of warranty.

  3. #3
    The_Walrus
    Guest

    Re: Which engine oil

    Hi bj,

    I've had a look at the Yammaha website and it says to make certain that you use oil with the same specs as in the relevant outboard manual.

    Nothing about using "marine" oils.

    Luc

  4. #4

    Re: Which engine oil

    Luc,
    I am also in the same boat (pardon the pun) as my yammy 40 4s is just out of warranty. I have just looked in my manual and it has it all listed on page 4-3. The specs are; API has to be either of the following SE, SF, SG, SH and SAE can be on of the following 10W-30, 10W-40 or 20W-40. I use a 10W-40 in mine.

    Also, capacity without filter change - 2.0L, with filter change - 2.2L. Recommended gear oil is a SAE90 Hypoid gear oil.

    Cheers,
    Clutter

  5. #5

    Re: Which engine oil

    Forgot, the oils are just automotive.

    Clutter

  6. #6
    Big_Kev
    Guest

    Re: Which engine oil

    I have generaly found that Jappanese manufacturers list basic requirements when it comes to oils.
    I would think that if you stay with the Yammalube you will not have a drama. But if you have a preference for a better brand so to speak I would be staying with a reputable company that only makes oil such as Castrol. Can cost a little more, but you get what you pay for.And if you talk to the rep he can steer you in the right direction. IE: I would definitely not go for a no name or big department store brand.
    If you are worried about your engine you can always get an oil analysis done on the used oil that will tell you all the important stuff.
    I myself don't recomend changing oil types midstream so to speak in any engine that has been running on the same oil type for an extended number of service intervals.
    Hope this helps cheers Kev.

  7. #7

    Re: Which engine oil

    Each oil supplier such as Mobil, Castrol or the like has a listing of what oils are suitable for each engine whether it be a marine or automotive. I suggest you contact your local distributor who will advise you what oil is suitable.
    If he does not know he should be able to find out or give you a contact for the manufacturer that can tell you.

    I personally have never used the oil branded by the engine manufacturer and sold at an exhorbitant price even during warranty, the only thing to do is to ensure the oil meets their specification that is listed in your owners handbook.

    Hope this helps.

    Andyok

  8. #8

    Re: Which engine oil

    hey guys
    just been sorting out the same problem myself.im now useing a castrol automotive oil in my yammie100 4 stroke after checking with sundown marine.and the teck department at castrol.i also managed to buy a genuine yammie oil filter from the local motorbike shop and its about 30% cheaper than the same filter from a marine shop.castrol also has a high temp waterproof grease
    so you can do your bearing buddies and your donk with the same gun.
    cheers scott

  9. #9

    Re: Which engine oil

    Valvoline XLD Low-Vis has a cj rating by memory and is a 10w-40 or 30. A local outbourd mechanic buys it off my work for all the 4 strokes he services. Marine 4 stroke oils are the same as automotive oils. Have been told this by a few technical advisers from different oil companies which do both auto and marine oils. Just a different label. As for gear oils, use marine gear oil. Has a few different additives and goodies in it. Once my 4 strokes out of warranty, I'll be using XLD Low-Vis. Available at any good auto store. (And no I'm not going to plug my work lol)
    Cheers Bill [smiley=rifle.gif] [smiley=rifle.gif] [smiley=rifle.gif]

  10. #10

    Re: Which engine oil

    I've got a Yammy 60 HP 4 stroke and when it was new i thought about going to a fully synthetic oil. The lube expert at work said don't do it. Firstly the synthetic stuff can ruin the seals in your engine if they're not designed for it and the other is that fully synthetic oil tends to attract moisture. When I found this out I checked with Yamaha and then a mate who was running his Honda on it checked, the results were the same. I have been thinking of using an alternative oil too but have a good think about it first.

  11. #11

    Re: Which engine oil

    So what is the "cost difference" between the "proper" oil and the alternate (el cheapo) oils?

    Is the difference that much compared to the overall cost of things considering possible maintainence/overhaul costs or are we worrying about saving a few cents now instead of bucks down the track (maybe).

    Oil doesn't go off and buying (good) oil in bulk might initially cost more but in the long term it's really saving money (all round).

    As for gear oil, there ain't no way I would be running ordinary old automotive gear oil in my gear cases.


    anyone see the new 4 Stroke commercials #[smiley=stunned.gif]

    It's heavier! It's bulkier! It's slower! It costs more! BUT YES IT'S QUIETER AT IDLE!!!!!!

    New commercial # nah, just kidding but Yes that's ALL true #

    And with 2Strokes being those evil 2S oil burners # Yes # they've found that magical vacuum place in space where used 4 stroke oil is vanished never to harm the earth again #[smiley=speechless.gif].



    Cheers, Kerry.

  12. #12
    NQCairns
    Guest

    Re: Which engine oil

    Hey Davo, Buy some blended oil you only need like 20 or so % synthetic to get all the benifits of a synthetic in blended oils they say.nq
    Also read at

  13. #13

    Re: Which engine oil

    Just on the difference in oils. Some years ago (late 80's early 90's I htink) a test was conducted on taxi's in New York to find out if there was any notable difference between oils and service intervals. A fully reco'd engine was fitted to a taxi then that old engine reco'd and fitted to another and so on and so on (about 40 taxis in all I believe). Taxi's were paired up with both taxis running the same oil but one running normal oil changes (5000 miles) and the other going twice (10000miles) the interval. 20 different brands and grades were used. Obviously this all took some time, 5 years or more and at the end each engine was stripped down after about 500 000 miles and examined. A total of over 20 million miles.

    I know this is long winded but the end result was that there was no appreciable difference in wear between the engines and the conclusion was that there was no advantage to running oils above the grade and class recommended by the OEM. Fuel economy was all pretty much the same also.

    The reason this was of interest to me was that back then I was an engine reconditioner. Something to think of anyway. Think it may have been reported in a Choice magazine also.

    Clutter

  14. #14
    NQCairns
    Guest

    Re: Which engine oil

    Hey Davo, Buy some blended oil you only need like 20 or so % synthetic to get all the benifits of a synthetic in blended oils they say.
    Also read at http://www.bobistheoilguy.com/ on the forum that 10w is now the same grade as the old 5w oils, you wont catch me putting a 10w in any motor out of warranty, unless I lived at threadbo all winter, all manufacturers that use 10w do so for the added fuel economy but this at the expense of wear, who cares about a 1% boost to economy when the tradeoff is wear? nq

  15. #15

    Re: Which engine oil

    hey kerry
    never seen that add.us four stroke owners dont watch tv cause were all out fishin instead of saving our pennies for a tank of juice.
    gota go the radio is playin SMOKE ON THE WATER

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