Found this site that tested four different oils in two stroke enignes. Total of 280 hrs for each engine test. I never run pennzoil in my truck but i have been using the 2 stroke oil in my dirtbike with out failure,but pennzoil did good in the test. This should be good for boaters too as the engine speeds are almost identical. Hope you enjoy.
http://www.ultralightnews.com/features/oiltest.htm

 

Sounds like a Pro-Pennzoil test, as the other "conventional" brands were not named...they could be a WalMart brand for all I know, albeit I did not read the entire article if the conventional brand was mentioned. I myself use Phillips Injex in my Snowmobiles. I'm a member on a few snowmobiling forums and each person's preference for a 2-stroke oil seems to get more varied than those for an automotive 4-stroke oil.

http://www.phillips66lubricants.com/Injex_LearnMore.htm

 

I think it was done to put the bad rumors about pennzoil to rest. For 2 stroke oil. The pics do look good for Pennzoil though. I have just been running pennzoil and i wanted to find info on really how good it is since i use it.

 

I can tell ya injex asnd amsoil dont burn your eyes like the others do. this usually happens when 10-20 sleds pull up and take a break along a trail

 

I've been using MC1 full synthetic in my jetski and Banshee with no trouble for almost 20 years, I'll occasionally use Blendsal (sp?) because I like the smell (smells like racing lol) and can't always find the MC1 out here.

 

is there any way to test the gas/mix that in the tank already to get the current mix of the fuel?

iv got a boat and old '75 Evinrude 15hp and its acting like the fuel/mix is rich( bad idle coughing and dropping a Cyl / but at high speeds its fine)

 

I've noticed the same thing. When my sleds have warmed up, there is virtually no smoke with the Injex.

There is no way to test that I know of. I would drain the gas and start with something fresh. If I have left over mixed fuel at the end of the season, I just dump the premix gas in the gas tank in my '79 Ford. The two stroke mix won't hurt that old truck. The other thing with running premix in two strokes is they tend to gum up carburetors. That might be part of your problem, too. The thing you want to avoid is a lean condition and that is why most two stroke owners do a thorough carb cleaning on their boats/sleds or whatever in the preseason. During use, I usually run Seafoam in my fuel as well. That has kept my carbs really clean during the season.

 

thats the thing that carb is clean it looks brand new!

 

I work at a motorcycle shop and the biggest thing i see with carbs is that the pilot jet is clogged. This is the jet that the engines used to idle and use up to the mid range. The pilot jet has a really small opening and the main jet is pretty big. if the pilot is clogged it will run rough, but at higher speeds it runs off the main jets, which dont get clogged too bad.
Best bet is to do a really good cleaning and use a piece of wire from a wire brush to clean the pilot jet.

 

Ranger pull some fuel from the bottom of the tank and put in a clear bottle and see if
water seperates out to the bottom or if you can see in the tank you will see clear
bubbles of water on the bottom of the tank. Try some 2 stroke safe gas line dryer.
I think pennzoil actually makes a fuel treatment for marine engines that uses isopropynl
alcohol just becareful on using too much since any addition of anything will lean out
the oil/fuel mixture so not much then 16oz at a time on a almost full tank(or 5gal)
I have used Yamalube r in my 89 yz 250 ever since it was new and it is on the
original bore(new piston and rings several times) I also run it at 32:1 even if I have
to change the spark plugs several times due to low speed fouling!! The main thing
with most 2 strokes is (especially lawn equipment) is keeping the filter clean and oiled
with a foam filter specific oil since most new engines are aluminum bores with a coating
of several metals. If you are eating cylinders or rings it is a sign that dirt is getting in
and not a failure of the oil, Oil failures are the main bearings and the big end bearing
getting siezed up or worn out!! Regular motor oil drips off filters and gets washed off
from the fuel that get's spit out from the carb when coming off full throttle and it
don't last more then a few hours. motorcycle shops carry foam filter oil and can be
split between several people since it doesn't take much and can go bad(too sticky)
if kept on the shelf, so share.

 

iv been running at the recommend 50:1, i sweetin it up to 40:1 i change the plugs 3-4 times during the season(march-nov) i cleaned the carb last year and dang thing was super clean for a old outboard. i know its about time for a coil/ points change on this thing.


how often do you guys rebuild your outboards?(total overhaul)

 

I can easily get 2 seasons out of a set of plugs on any of my newer outboards. Do a compression test to make shure your within factory specs. Check the coils, age will crack them eventually. Might be a good idea to rebuild the carb, the diaphrams tend to get hard over the years. Check plug wires for cracks or corrosion and make shure the end makes contact with the plug. Try some Amsoil Sabre outboard at 75:1 or 80:1 it will help eliminate fouling. Make shure the fuel filter and fuel lines are clean. Also may want to make shure the impeller is in good shape, they tend to dry out and crack. They are cheap and straightforward to replace.

My dads old boat had a 40hp Evinrude on we ran the hell out of that outboard ran it at a mix of whatever the oil injection mixed at probably around 75:1 or 100:1. Ran it real hard WOT most of the time for 9 years before he upgraded. The motor still ran like a top. Use good oil and regular maint and a 2-stroke outboard will last 15 years run pretty hard.

I have a 1957 Evinrude that I completly went over a few years ago, its never been opened up but its got low hours on it.(Was my great grandfathers)

I run my 06' 25hp yamaha on Amsoil Sabre Outboard at 80:1. Switched over to amsoil in my aircooled engines too. The main reason for the switch is less carbon because it seems to burn cleaner.

My dad runs Yamalube in his 130hp yamaha OB at 100:1 its a good oil too.