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Old 21 September 2008, 17:59   #11
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- especially in racing -
not the same though. Racers generally run to the limits, with much more frequent routine maintainence. So (1) its not the end of the world to check / change the oil a lot in case of a leak (2) if there is a leak they probably aren't going for long until it is spotted (3) if there is a gear box failure they probably aren't going far from help (4) given the costs of racing, risking destroying a gear box from a water leak is not necessarily the end of the world.

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Having spoken to the tech dept of a major oil supplier I was told that there is no difference - but not in so many words.............
so you use a marine brand gearbox oil in your engines or car stuff? bear in mind that when you come to sell those engines the buyer may be reading this thread...
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Old 21 September 2008, 18:16   #12
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not the same though. Racers generally run to the limits, with much more frequent routine maintainence. So (1) its not the end of the world to check / change the oil a lot in case of a leak (2) if there is a leak they probably aren't going for long until it is spotted (3) if there is a gear box failure they probably aren't going far from help (4) given the costs of racing, risking destroying a gear box from a water leak is not necessarily the end of the world.

so you use a marine brand gearbox oil in your engines or car stuff? bear in mind that when you come to sell those engines the buyer may be reading this thread...
I have no intention of selling my lovely engines!!!

Most Landies seems to cope fine with standard EP90 and they are underwater quite a bit as well - and some of them even leak.........
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Old 21 September 2008, 18:38   #13
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I have no intention of selling my lovely engines!!!
what never? I thought you were planning to upgrade to a 300HP ?
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Most Landies seems to cope fine with standard EP90 and they are underwater quite a bit as well - and some of them even leak.........
mmm... I can see this turning into a Landrovers are crap thread if we're not careful! Here are some differences between a landrover and an outboard which spring to mind: (1) landrover spends most of its working life out the water (2) landrovers will almost always be stored out the water (3) landrover more likely to be in fresh (therefore less corrosive) water (4) engine speed and drive shaft speeds typically considerably less on a landrover (5) and probably most importantly, very low risk of fishing line destroying your drive shaft seals on a landy (6) a dead gearbox is unlikely to be life or death on a landy (7) larger gearbox on a landy so more oil, therefore a small water leak is less concentrated (8) landy probably gets more tlc/sees a mechanic more often than an average outboard. (9) if a leak does develop on a landy good chance it will not spend much time immersed before it is spotted and resolved.

Most outboards are probably fine with standard oil - as they don't have a leak. The point is when you get a leak in a bit of the engine that is always under water - you want to do everything you can to stop that becoming a crisis.
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Old 21 September 2008, 21:13   #14
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I can't believe that this is even worth debating given the minimal price difference of using something designed for the job vs any old tat from halfords.
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Old 21 September 2008, 22:01   #15
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I can't believe that this is even worth debating given the minimal price difference of using something designed for the job vs any old tat from halfords.
It's only because I hate it when people rip us off - it's funny how the makers who don't sell oils suggest using something generic!!!

Both Volvo and Enfield with the Z drive say that any quality gear oil may be used...........

It is NOT a matter of being tight. Just common sense. For example why buy Panadol for 2.50 when Tesco parecetamol costs 15p???
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Old 22 September 2008, 10:17   #16
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In the states many people uses synthetic gear oils becuase they are better than normal grades - especially in racing - they aren't "marine grade"!!!

Having spoken to the tech dept of a major oil supplier I was told that there is no difference - but not in so many words.............
Cod you got both issues right, about that synthetic could be used and "there is no difference - but not in so many words" besides no Company will ever tell you that their oils are good quality recanned ones bought from reputed Companies. Is a must "marine" issue that has to be sold to clients.

As one stated, if cannot buy a can of Quicksilver oil, must not be boating, must say that Mercury/Mariner are no longer on the outboard bussiness down here, so no products available. So have to look for an alternative best transmission oil available. The quoted price is the final end distributer price, not street price, so cheap buy for me, doesn't mean it's poor lub quality. Feel free to use any lube you want to.

If you leg is water leaking, and not detected on time, no matter which oil you'll be using will ruin your complete gear box fast, so it's a good issue if you have the available time and know how to do it, each 50 hours, ckeck level oil if ok, add if needed, or detect milky oil. (you are a luky man, detected on time, time for minor gear box repair).

Happy Boating
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