whats the diff between 2t motorcycle oil and outboard 2t oil

[ratman67]

i have had many 2t bikes such as kawi h2 750s, rg500 gamma, aprilia rs250. i always ran amzoil 100 to 1 pre mix and never had any type of seizure. i have a pair of rude 300s on my 32 manta and was wonder what the diff is between mc and outboard 2t oils. thx in advance for enlightening me, rm

[JohnR]

I think the load on the outboards is greater as is the amount of time they spend at or close to redline. A quality oil mixed at 40:1 will not smoke that badly, will not foul plugs, will lessen wear on the engine, and will make more hp. I've seen the dyno sheets on a 2 stroke 250cc single cylinder ATV engine run at all different ratios (50:1 to 20:1 IIRC) and the oil rich mixes made more hp. Not a lot but the point is it didn't hurt the power output.

[Mr. Demeanor]

Air cooled vs water cooled 2 stoke oils have different chemistry.

Typical 2 stroke outboard engine oil meets TC-W3 standards although not all manufacturers send in their oil for certification.
Here is some info on what those standards are:
http://www.nmma.org/certification/certification/oil/tc-w3.aspx

[Tom Foley]

I'll let you in on all the info but first you will have to ship me a Suzuki RG 500 Gamma , one of the trickest bikes of all time !!

[LakeTrash]

The Gama is exceptional. I always wanted one after I got out of the Suzuki dealership but never could find one when I had the money.

Ended up finding an RZ500. I ran Amzoil at 70 to one with no problems. I know there are differences in oils but I have used marine in the RZ in an emergency and the same with regular oil in my outboards with no problems.

I really think the manufacturers will say anything to get your money.

LT

[JohnR]

The semi syn that goes in my boat goes in my sleds, and goes in my built motor in my ice trike. It was recommended by a member here with probably 35 years of outboard and sled experience as what he uses in his stuff. If it's got his trust it's got mine.

[Mr. Demeanor]

I use to ride with a guy who had a Gamma. I had a Kaw ZX10 at the time and he was right there with me.

[racerx]

We know that wasn't a stock Gamma...

[myron]

Yamalube 2-R is one of the best 2 stroke oils made

[racerx]

Myron you are correct run it in outboards most of the time..

[mach351]

My R5 gets the same mix my boat does.

[Mr. Demeanor]

We know that wasn't a stock Gamma...

I would pull away but not too fast until we really got moving. Might not have been stock either.

[Rayzor]

Yamalube 2-R is one of the best 2 stroke oils made

Yamalube 2-R is what Chris Fairchild recommended for my SST120 motor. I always ran Red Line Two Stroke Race Oil (the red oil) in my 2.5/280s at 32:1 and never had a problem. I raced 2 stroke 80s and 125s all through the '80s with the same exact oil at 40:1 and never had a problem.........

[rev.ronnie]

I asked a Klotz rep once what the difference between snowmobile and watercraft oil was ( I had a bunch of snow oil in stock and needed watercraft) . He said " the label".

[Markus]

Air cooled engines (like motorcycles and chainsaws) and water cooled engines (like outboards) have very different requirements for lubricants. Your average TC-W3 oil is not a good choice for a motorcycle engine.

However, some synthetic TC-W3 rated oils also meed JASO-FD and ISO-TD, the most stringent standard for air cooled engines. Klotz is one of them: https://www.klotzlube.com/techsheet.asp?ID=62

[Tom Foley]

https://www.facebook.com/pages/Oldskool-2strokez-Rulez-O2R/160749850775614#

[JohnR]

Realistically, there's not a lot of air-cooled motorcycle/ATV 2 strokes anymore. The only one you see regularly that was built in the last 25-30 years is the Yamaha Blaster. All the dirtbikes went liquid almost 30 years ago.