Puch Moped Oil/Gas Mixture

I recently had my 77 Puch Maxi Moped geared up and ready to ride. The shope said I can use premium unleaded gasoline and not worry about the oil mixture. However online I find things that say differently. Also when I ride it it stalls as if the engine is running so hard and needs to shift, however you don't shift these do you? Thanks from a beginning Puch rider!

Re: Puch Moped Oil/Gas Mixture

NEVER run a moped without 2 stroke oil.....You engine is probably soft seizing because you are running it without oil! Drain your tank and mix a 50:1 ratio of two stroke and regular 87 octane gas. Whoever you talked to is a total moron....Trust me.

Re: Puch Moped Oil/Gas Mixture

Trust Crisis.

Some 'peds take 50:1, some 40:1 and yet others take 33:1 (like my 1977 Minarelli-engined vehicle --- although there's even some debate about that!) I would think it's a better idea to use too much oil than not enough. The risk of the former is a fouled plug and particularly stinky exhaust (either of which is easily enough diagnosed and corrected the next time you mix gas). The risk of the latter is engine damage. The choice is yours, but the answer is, I think, obvious.

You can use synthetic or ordinary two-stroke oil. Both will be fine in your engine. Gasoline octane doesn't matter, either. The high-octane fuel will not harm your engine (although it will make a dent in your wallet over time), but won't provide any benefit.

I don't know your moped, but if it's a single speed than it's not surprising that it would rev up and sound like it needs another gear. It does! But multi-speed transmissions cost money and add complexity, and old mopeds were designed to minimize cost and maximize reliability.

Re: Puch Moped Oil/Gas Mixture

Too much oil can actually make you run too lean....You have to be careful....I would say never use 33:1 in a moped.

Re: Puch Moped Oil/Gas Mixture

i use 32:1 and my plug chops are perfect.

Re: Puch Moped Oil/Gas Mixture

Some mopeds require a higer octane fuel, mine has a 70cc high compression head and it requires 98 octane plus. Plus when you run a higher octane your bike runs a little richer. That is the problem I am having now. With 116 I am fouling more plugs then when I was running 93 for a couple of miles cause I didnt want to want to wait for the performance shop to open up.

Re: Puch Moped Oil/Gas Mixture

be careful on that 'be careful'... using more oil with the gas DOES lean out the gas to air ratio... BUT.. it is a small effect... less than the effect of one size on a main jet.

So don't overstate that effect... the only time that will have a dmaging consequence is when the guy is already running on the ragged edge.

... its a small effect.

... and I have no problem with a 32 to 1 oil ratio.. at all.

Most people who race 2 strokes run around 32 to 1 ... and there are also misconceptions that running more oil makes less HP ? ... not true.. as proven with dynamometer tests.

You might foul plugs a little more often.. but the motor will like the oil.

I hope this guy wasn't running NO oil in the gas !?!?!

Re: Puch Moped Oil/Gas Mixture

was there ever an OIL INJECTED Puch like the one this guy has? if so, the shop may have been referring to the fact that its injected, and dosent need mixing, in which case, he should check his injector system. me personally, id pull it off and run premix, i dont trust the things worth a damn, EVERY oil injected 'ped ive had has soft seized at one time or another!

-Garret

Re: Puch Moped Oil/Gas Mixture

My Cimatti Owner's Manual has this to say about lubrication:

"The engine is lubricated by mixing oil with the gas. Regular gasoline and a quality two cycle synthetic motor oil should be mixed according to the instructison on the can. If synthetic oil is not available, use two cycle motor oil on a 33:1 ratio."

So maybe the ratio for synthetics is lower in some circumstances. But the 33:1 has been beddy beddy good for my Minarelli for the past 25 years.

Re: Puch Moped Oil/Gas Mixture

forgive my ignorance, i'm new at this moped thing. but how exactly do you go about mixing the 33:1 ratio? thx.

Re: Puch Moped Oil/Gas Mixture

You need to use 33 parts gasoline to 1 part oil.

A gallon is 128 ounces. Divide this by 33 to get 3.9. So for each gallon of gas, add 3.9 ounces of oil.

I put 4 ounces of oil in the tank and add a gallon of gas, which gives me a ratio of 32:1. Close enough.

If you use 3 ounces of oil to a gallon of gas, you'll have a ratio of 128/3 = 43:1.

Got it?

Re: Puch Moped Oil/Gas Mixture

Fallen Amish ~Yoder~ /

Okay on my Puch magnum I just filled the tank with gas. Now, how much oil goes in? I don’t get the ratio stuff so just tell me how many ounces please.

Re: Puch Moped Oil/Gas Mixture

Overpriced Parts /

> Fallen Amish ~Yoder~ Wrote:

> -------------------------------------------------------

> Okay on my Puch magnum I just filled the tank with gas. Now, how much

> oil goes in? I don’t get the ratio stuff so just tell me how many ounces

> please.

Drain the gas out of the tank Mix gas with oil in a separate container make sure none of the gas didn’t get in your carb without oil And do not start the engine with raw gas

Re: Puch Moped Oil/Gas Mixture

Pushrod Fifty /

Use conventional 2 cycle oil and mix it at 2.5 ounces per gallon for 50:1 mix for a Puch. If you filled your tank already, put 2.5 oz of oil in it and ride.

Easiest way is to pump 1/2 gallon of gas at a time when your out riding because its only a 1 gallon tank and you don't want it totally full. Buy some mini ?4oz? 2 cycle bottles of oil at walmart and a quart of oil. Pour 2.5 ounces of oil in the small bottles after you use the original stuff in the bottle. They are a dollar n change at walmart. Buy a cheap measuring cup to get it consistent every time. Put the bottle in your pocket or pack and if you need gas, pump 1/2 gallon gas and pour in half bottle- 1.25 oz of oil. That's what I've always done and it's only a little prepwork in the garage but makes a gas stop so much quicker.

Re: Puch Moped Oil/Gas Mixture

Finally some solid answers 18 years later.

Thanks.

Re: Puch Moped Oil/Gas Mixture

> river 2strokes Wrote:

> -------------------------------------------------------

> Finally some solid answers 18 years later.

>

> Thanks.

So , you don't consider Fred's answer/comment solid ? (edited)

Re: Puch Moped Oil/Gas Mixture

Pushrod Fifty /

Yea because he's the Freds Guide dude, he knows his shit.

Re: Puch Moped Oil/Gas Mixture

Fallen Amish ~Yoder~ /

> river 2strokes Wrote:

> -------------------------------------------------------

> Finally some solid answers 18 years later.

>

> Thanks.

Good things come with time lol

Re: Puch Moped Oil/Gas Mixture

ilost my measuring cup for oil mixture I have a 1 gallon gas can how much oil should i put in the gas can ...what measuring device could i use for the oil to gas in the 1 gallon gas can ,,,,,,,,it is a 78 derbi tt variant

Re: Puch Moped Oil/Gas Mixture

Friends - Go to Walmart or any grocery store and look in the kitchen section. There are lots of little soft plastic ( i.e. unbreakable ) measuring cup thingys that will have multiple markings on them for milliliters and ounces and fractions of cups, etc. I found a great one that even has a pointy little spout so it doesn't drip. I ended up using that one for some additive I'm putting in my tractors but you get the idea. Got a measuring cup in the kitchen ? It has ounces on it. Pour 2 1/2 ounces of water into something and mark it with a sharpie. Empty the water and dry it good. Bob's your uncle - there's your new oil measure thingy.

Lookit- I got some 50:1 TruFuel for my ped then noticed on the tank it says don't use unleaded gas. Crap. WTF ? I started using Trufuel ( dif ratio ) for my chain saw cause ethanol kills chain saws. TruFuel for my 78 Puch Maxi Luxe ? Yes ? No - what say you ?

Re: Puch Moped Oil/Gas Mixture

True fuel is fine, that sticker on youright bike was to keep people from using white gas in it. Unleaded is fine, ethanol free is best if you can get it, but not required if you ride often.

Re: Puch Moped Oil/Gas Mixture

Thank you so much Stephen - you guys are so nice and welcoming to those of us who are new here and still asking THE most basic questions.

What a nice Army.

Re: Puch Moped Oil/Gas Mixture

> Trudy Fair Wrote:

> -------------------------------------------------------

> Thank you so much Stephen - you guys are so nice and welcoming to those

> of us who are new here and still asking THE most basic questions.

>

> What a nice Army.

Hey , none of that mushy stuff . LOL

Re: Puch Moped Oil/Gas Mixture

Matthew Koser /

Hi. I just recently got a ‘59 MS50. I got it running after sitting for decades.

The cap says to put 5 “cups” of oil in per gallon of gas. It measured out to like 6 or 7 ounces! That’s thick!

It ran like garbage on that mix, so I cut it down to probably 35:1 or so.

It runs much better. Will that be safe to run in this old lady? What are others running?

Thanks!

Re: Puch Moped Oil/Gas Mixture

32:1 is what I run, many use 50:1, either should be cool....I would go 32:1 because it is old and they were designed to run oil rich, the old oil was no where near as good as what's avail today.

Re: Puch Moped Oil/Gas Mixture

> Toehead Wrote:

> -------------------------------------------------------

> i use 32:1 and my plug chops are perfect.

Ditto(between 32 and 40:1), and I never have to replace bearings.

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