Synthetic oil

[SMF]

Is it ok to use synthetic oil in 4 stroke outboards? If you do what type/brand do you use? (I have a nissan 5hp)<br />oops, thought I was in non-repair.

 

[TOHATSU GURU]

Re: Synthetic oil

During break-in = Bad<br />After break-in = OK

 

[JB]

Re: Synthetic oil

Moving to Non-Repair.

 

[LubeDude]

Re: Synthetic oil

Yes it is ok, I actually recommend it, but make sure you use the right wieght and designation that your engine requires. Like mentioned, "NOT FOR BREAK IN"!

 

[Drydocked]

Re: Synthetic oil

Originally posted by LubeDude:<br /> Yes it is ok, I actually recommend it, but make sure you use the right wieght and designation that your engine requires. Like mentioned, "NOT FOR BREAK IN"!

I am curious - why are synthetics not recommended for break-in?

 

[khc1970]

Re: Synthetic oil

When breaking in you do want a small amount of wear on the piston rings, with syn oil being so fine, wear is not as desired.

 

[Vlad D Impeller]

Re: Synthetic oil

Originally posted by LubeDude:<br /> Yes it is ok, I actually recommend it, but make sure you use the right wieght and designation that your engine requires. Like mentioned, "NOT FOR BREAK IN"!

What weight and designation would my engine require?<br /> <br />its a 2 stroke 1989 Mariner 3cyl 75hp.

 

[Terry H]

Re: Synthetic oil

You would use 2stroke Tcw3 oil Vlad. It mixes with the gas. You can use a synthetic, a synthetic/dino/blend, or a dino oil...your choice. Chief

 

[Vlad D Impeller]

Re: Synthetic oil

I presently use quicksilver TCW 3 oil, i'm thinking of going synthetic because there is less smoke

 

[Vlad D Impeller]

Re: Synthetic oil

can i add the synthetic to the dino oil or do i need to bleed out all of the dino oil first?

 

[Terry H]

Re: Synthetic oil

Use as much of the existing oil as you feel safe using then add the new oil. BTW Vlad, what oil will you be using? Chief

 

[Vlad D Impeller]

Re: Synthetic oil

Thats what i would like to know, what synth oil should i use?

 

[Terry H]

Re: Synthetic oil

How much do you want to spend on oil? You can buy the Pennzoil version of synthetic blend for under $10 bucks a gallon, which some folks swear by, then there's the Pennzoil synthetic, a little more cost. Then there's the ones that claim a fancy pedigree...You can pay over $40 a gallon if you want. You should do a "search" for 2 stroke oils in this forum...might help you decide. There'll be others along that know more about this than do I. Chief

 

[dajohnson53]

Re: Synthetic oil

Originally posted by Vlad the Impeller:<br /> Thats what i would like to know, what synth oil should i use?

OK, I have a brand new personal motto about two stroke oil: put the same amount of thought and care and expense into it that you put into your car oil. I'll bet not a one of us has ever spent 1/10 the time and effort mulling over our car's oil as we spend thinking about 2 stroke oil. We most likely just buy whatever the shop is putting in, or if DIY, one of the major brands, probably personal preference and/or what's on sale. If we're flat broke (as I've been in my life), I buy the cheapest stuff I can, change regularly and again, don't worry one iota about it.<br /><br />Same goes for synthetic - those of us that use it probably just go with one of the well known brands. Them of us that don't use it, never worry or argue about it.<br /><br />That's my story and I'm sticking to it.

 

[Vlad D Impeller]

Re: Synthetic oil

I'm not into hype and brand names, i just would like to use a good oil that does'nt smoke a whole lot, so my understanding so far is, it is ok to use any synthetic as long it is formulated for two stroke motors,did i get it right?<br />What is the weight designation that LubeDude talked about?

 

[LubeDude]

Re: Synthetic oil

Originally posted by Vlad the Impeller:<br /> What is the weight designation that LubeDude talked about?

In your owners manual, (if you have one), It will give a "recomended" Viscosity #. Like 10W-30 or 10W40 or 30W, or 40W.

 

[Vlad D Impeller]

Re: Synthetic oil

It says 2-cycle oil TC-W3, is it the same rating for synthetic oil?

 

[LubeDude]

Re: Synthetic oil

Originally posted by Vlad the Impeller:<br /> It says 2-cycle oil TC-W3, is it the same rating for synthetic oil?

Sorry, I had my head where it didnt belong. I thought we were still talkung 4 cycle, Hellloo.<br /><br />Anyway, yes its the same designation for synthetic as with conventional. The Pennzoil 100% synthetic is a good oil.

 

[Vlad D Impeller]

Re: Synthetic oil

Thanks LD <br />Do i need to bleed out all of the dino oil before adding the synthetic oil?

 

[phatmanmike]

Re: Synthetic oil

no, they mix just fine.<br /><br />but, you'd get better results if you used all the old oil, decarbed your motor a good 1 or 2 times, and THEN added the synthetic.<br /><br />i did this one my 1976 merc1150 inline 6 and it was a day and night difference. since then, i swear by synthetics.<br /><br />personally, i use penzoil 100% synthetic.