I used 2 stroke engine oil for outboard engines in my Vespa will this cause my engine to cease?

TO MIX THE FUELSee Figure 3.? The product is powered by a 2-stroke engine and requires pre-mixing petrol with2-stroke oil. Pre-mix unleaded petrol and 2-stroke engine oil in a clean containerapproved for petrol.? The engine is certified to operate on unleaded petrol intended for automotive usewith an octane rating of 91 ([R+M]/2) or higher.? Do not use any type of pre-mixed petrol/oil from fuel service stations, such asthe pre-mixed petrol/oil intended for use in mopeds, motorcycles, etc. Do not useautomotive oil or 2-stroke outboard oil.? Use only synthetic 2-stroke oil.? Mix 2% of synthetic 2-stroke oil into the petrol. This is a 50:1 ratio

need the year of manufacture as some 2 stroke units have oil injection that automatically mixes the oil in the correct ratio for engine rpms otherwise it is 50:1 ( 50 parts fuel to 1 part oil)
oil requirements --certified tc-w3 2 stroke outboard oil ---not ordinary engine oil
reference
google --type in mercury outboard oil to fuel ratio

This is a 2 stroke engine - an outboard motor?

Two strokes are quite robust. The usual mistake people make with these engines (think of chainsaws, lawn mowers and hedge strimmers..) is to use car engine oil instead of the correct two stroke oil. Motor oil is completely incorrect and fouls the spark plug.

The other fault is to mix fuel and two stroke oil in the wrong ratio. Most chainsaws etc .. use a mix of 25:1 Too much oil causes oiling and misfiring of the plug. Too little oil causes excessive and fast wear.

Your engine starts up. That tends to suggest that everything is working ok up to a point.

However, look on the following link which deals with an overheating problem for that engine:

http://www.etecownersgroup.com/post/25hp-etec-problem-6107593

Matt, If engine is two stroke and not oil injected then yes you must mix 2 stroke oil and fuel. 4 stroke engine have a crank case which is filled to proper level with 4 stroke engine oil. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
How to Decide Between Two or Four Stroke Outboard Boat Engine

4 Stroke Outboard Motor vs 2 Stroke Outboards

2 stroke outboard Vrs 4 stroke outboard

http://www.cottagetips.com/tips/boat-motor-gas-to-oil-ratios

All Vespa's old or new run without need of lead as your engine internals are lubricated by either the gear oil or 2 stroke oil.

no, it's not!
- do you have the later type of PX with a separate oil-tank which mixes the oil automatically to the gasoline or do you mix the two-stroke oil in a 50:1 ratio by yourself to the gasoline tank?
- if you have the 2 tank system you need to fill up the oil-tank always with two-stroke oil!
did you ever made a service on your Vespa?
like changing spark plug, replace engine oil , clean carburetor and adjust ignition etc?

Here is the scoop copied from the Husky site:

Two-stroke oil
• For best results and performance use HUSQVARNA twostroke
engine oil, which is specially formulated for our aircooled
two-stroke engines.
• Never use two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil (rated
TCW).
• Never use oil intended for four-stroke engines.
• A poor oil quality and/or too high oil/fuel ratio may
jeopardise function and decrease the life time of catalytic
converters.
• Mixing ratio
1:50 (2%) with HUSQVARNA two-stroke oil.
Hope this is helpful, let me know if it's not and I'll come at it some other way:)

From you manual:
Two-stroke oil
For great results and performance use HUSQVARNA two--stroke oil, which is specially formulated for our two-stroke engines. Mixture 1:50 (2%). To maximize the life of your trimmer, you may choose to use a high quality synthetic oil formulated for two-stroke engines. Mixture 1:50 (2%). Never use two--stroke oil intended for water-cooled outboard engines, sometimes referred to as outboard oil. Never use oil intended for four-stroke engines.
WARNING! Always ensure there is adequate ventilation when handling fuel.

1 gallon of premium fuel to 2.6 ounces 2-cycle oil. 2.6 ounce pre-measured containers are available at most chainsaw outlets.

You can find your manual here:
HusqvarnaUSA.com
http://www.husqvarna.com/us/homeowner/support/download-manuals/
Enter the 3 digit model number (no XPs, Es, just the numbers)
Serial number decode – useful when downloading IPLs and Manuals
06 1500198
06 = year produced – 2006 (single digit before 2000)
15 = week produced - March
00198 = 198th unit Husky produced that week
HTH
Lou

Older Vespa is 2% mix = 50:1. Get the measurement cup made for Vespa

50:1 is the mixture for the Jonsered 535. I bought mine new around 1991 and it's been a great saw.