brand of 2 cycle oil to use

DJENAN

Seaman Apprentice
Joined
Sep 29, 2003
Messages
34
which is the best 2 cycle oil to use in my 70hp 1978 mercury? i have been using mobil marine 2 cycle oil
 

Troy_from _Oz

Petty Officer 2nd Class
Joined
Sep 29, 2002
Messages
126
Re: brand of 2 cycle oil to use

Djenan - if you do a search in iboats for this topic you'll find heaps of info - its the subject of great debate. Many say use the absolute best you can buy - many say only use OEM products and many say use anything (cheap?)as long as its TCW-3 (the other two options will also be TCW-3).<br /><br />My 2 cents on the matter are that if i had a nice sparkling new engine that had been designed with the newest greatest oil in mind, then id go for the best i could afford (cos if i could afford a $15000 engine i could afford a few extra bucks on oil). but!...My engine was built in 1971 and i figure that TCW-3 approved oil should be bounds ahead of what was around 30+ years ago.... so figure i cant go too wrong as long as its tcw3 - maybe im wrong...<br /><br />Im using shell nautilis oil at the moment -its competitive in price to the cheapest oils here in oz ($22 for 4 ltrs i think???)and hopefully shell know what they are doing.<br /><br />Anyway - do a search here and see what you find<br /><br />cheers - troy
 

andrewkafp

Lieutenant Commander
Joined
Mar 15, 2003
Messages
1,668
Re: brand of 2 cycle oil to use

It doesn't really matter as long as it's made to the TCW-3 standard (As troy says), but just a suggestion.<br />I use Castrol Marine 2 stroke that conforms to all the specs, but in addition it's a nice dark green colour...<br />Ever had that bit of doubt when you say #$%^% Did I mix my oil :confused: :confused: or not ?<br />(A bit like Dirty Harry with the 6 shots or only 5 Do you feel lucky ??? :D )<br />When you mix it, you will know that the ratio will be right coz you most likely have a handy container with a mark on it !!! right??<br />But if you grab 2 clean glass jars and put unmixed fuel in one and squirt some from your tank in the other.. You should have 2 distinctive colours. 1 is green and the other is pink.<br />Yep.. you've certainly mixed something.. which is MUCH MUCH better that nothing :eek: <br /><br />Have a squiz here..<br />Poor old ZMOZ <br /> :( <br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=29;t=009462
 

Troy_from _Oz

Petty Officer 2nd Class
Joined
Sep 29, 2002
Messages
126
Re: brand of 2 cycle oil to use

Yep - I agree with Unicorn - The nautilis is a dark blue colour and is thats one of the reasons i like it (not that i have a preference for blue, just that its a distinctive colour ;) ) . I just thought i was odd taking comfort in the colour of the oil im using - maybe im not so odd after all. ;)
 

andrewkafp

Lieutenant Commander
Joined
Mar 15, 2003
Messages
1,668
Re: brand of 2 cycle oil to use

Another Newbie trick I've found.. A bit unrelated though.<br />When you change your L/U oil (Easy job) replace your plastic washers with Merc bright "BLUE" ones..<br />(Should make Troy happy :D :D :D )<br />The reason for this, is that you can see the bugga's in there when checking for water in oil. The black or clear ones are impossible to see in the recess and if one falls out and rolls away, you have no seal.
 

werdna

Seaman
Joined
Sep 9, 2003
Messages
57
Re: brand of 2 cycle oil to use

Good comment. Just a thought, our mechanic mentioned with the oil injected Merc's (specifically ours is a 115 '02 saltwater merc) to use only the Quicksilver oil. He mentioned a couple of brands that were not a good idea (Caltex and one other i 'think' but dont quote me on that one) as they can dissolve the epoxy that holds some magnet onto the oil level sender. I know thats really vuage, but i trust what the mechanic said, and i dont believe that he was on the 'buy authentic bandwagon'. he mentioned both some that do and dont work, but we just get the quicksilver stuff to be safe - about $22 for 3.8L...
 

The Marine Doctor

Commander
Joined
Jul 25, 2003
Messages
2,177
Re: brand of 2 cycle oil to use

I always like when this discussion comes up.<br /><br />Here is what I have to say. TCW3 is the minimum requirement for 2 stroke oil. Cheaper brands (Less expensive) do indeed meet the requirements but do not necessarily exceed it. <br />The expensive brands exceed the requirements.<br /><br />Now...after this has been said. Make your choice.<br /><br />TMD
 

Hasbeen

Petty Officer 2nd Class
Joined
Aug 29, 2003
Messages
167
Re: brand of 2 cycle oil to use

I cant ever keep from posting when this question comes up, Ive always wanted to say! " I suppose you use the cheapest oil you can buy in your car and truck too"! Boat engines run harder than any car or truck engine (Except maybe racing)! Why not use the best you can afford figuring the price of repairs to an outboard!<br /><br />Hasbeen
 

ronmold

Petty Officer 1st Class
Joined
Sep 8, 2003
Messages
240
Re: brand of 2 cycle oil to use

I do, Amsoil 2000 2 cycle racing oil. Burns clean & less carbon deposits.
 

Hasbeen

Petty Officer 2nd Class
Joined
Aug 29, 2003
Messages
167
Re: brand of 2 cycle oil to use

Well, the title of the post was! "WHATS THE BEST 2 CYCLE OIL" Well the best is Amsoil, end of decussion!!<br /><br />Hasbeen :D :D
 

Hasbeen

Petty Officer 2nd Class
Joined
Aug 29, 2003
Messages
167
Re: brand of 2 cycle oil to use

Well, the title of the post was! "WHATS THE BEST 2 CYCLE OIL" Well the best is Amsoil, end of descusion!! All tests prove it!!<br /><br />Hasbeen :D :D
 
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