Oil question???????????????

[Cane Pole]

I just purchased a new Suzuki 15hp 4 stroke. What kind of oil should I use? I got 2 different answers from 2 different local dealers.

What's the difference between marine 10w 30w and Nascar 10w 30w? They are both 30 weight oil with 10 weight viscosity are they not? Very confusing. What about using synthetic oil in the new motor?

Input if you please.

Thanks

Tom

[papasage]

go to this site and ask the dactor!!!!!!!!!!!!!!!!!!!!!
http://www.themarinedoctor.com/cgi-bin/YaBB.pl

[Barnacle Bill]

Tom, I am no expert in oil but I can tell you that in the term 10w 30, the w stands for winter. Meaning in the winter time the oil will flow like 10 weight oil and in the summer 30 weight. I have been following reports about synthetic oils and the only bad reports come from people putting it in high mileage vehicles. It loosens up sludge and causes oil leaks and in bad cases can clog the oil intake screen. In newer vehicles it is a far superior oil. In outboards (2 cycle) it burns cleaner with less smoke. As far as 4 stroke outboards I can only assume that it would be good for them but since I don't have a 4 stroke OB I haven't been following that much. Your owners manual mention it?

[3's]

Everyone I have talked to said to don't use synthetic oil until your rings have seated good. In a truck most don't recommend until around 20000 miles. Just passing on what I have heard several say

Signed
Holiday Inn Express customer:p

[J White]

I would guess the only difference might be the additives - just guessing.
Possibly a different mix of detergents and such to better suit the conditions?

I'm with 3's on waiting till it's well broken in... can't prove it, but that's
been the superstition/wisdom??? in several different motor hobbies I've
been in and I'd be skeered to challenge it.

After that tho, I fed my ole Honda 50 a steady diet of Mobil 1 full syn, it is on it's second owner after me and still going far as I've heard. I bet not many weekend guys had that many hours on a motor - I'd crank it backing off the trailer, and cut it off when I loaded up :D all day long, most of it idling against a trolling plate.

[skiptomylu]

The guy I bought my boat from said any good 10w 30w will be fine and I ask about Synthetic and he said yes that is fine too. So I plan on using Mobil 1.

After what I read above maybe I will use a regular high grade oil for the first change after break in, LOL!

[willsjwills]

if it's a 4 stroke, either the full synthetic or synthetic blend will do the job. If it's a 2 stroke, I'm not much help. I have used 4 stroke engines for the past two years and mfgr. recommends synthetic blend 20w40. I think I would check with Suzuki for recommendations. Marine synthetics and synthetic blends are not the same as automotive oils, not to say that automitive blends won't take care of your engine, but the marine oils have additives that will do a better job of protecting your outboard. Corrosion being one of them.

[Ken Kinser]

the 10W30 reg oil you put in your car works just as good as marine oil, I would get name brand and stick to it, i use Quaker State just personal preference

[Carl Palmer]

I just purchased a new Suzuki 15hp 4 stroke. What kind of oil should I use? I got 2 different answers from 2 different local dealers.

What's the difference between marine 10w 30w and Nascar 10w 30w? They are both 30 weight oil with 10 weight viscosity are they not? Very confusing. What about using synthetic oil in the new motor?

Input if you please.

Thanks

Tom

Tom, since you have a brand new motor and being the young man you are, which means you'll have this thing for many years to come, why not synthetic? You'll only be changing the crankcase oil once a year, so why not spend about 3-4 extra dollars? You will get great life from the motor, and you'll be protecting your investment at the same time. IF I had your money and had a nice pretty, shiny outboard, that is what I would do. Just my .02 cents worth. Carl

[Cane Pole]

This motor came from the dealer with no "how to" books. On the invoice was hand written: "add 1 quart of 20w 50 marine grade oil before cranking". This is from a Suzuki dealer! He did not specify a brand.

Dotties Marine said use 10w 30 Quicksilver marine.
Union City said use Suzuki marine oil.

Internet purchase. Free shipping, no tax. I guess a booklet would have been an option. I got the warranty papers though.

Suzuki web page didn't tell me crap.

What a revolting predicament this is. haha