Mini Baja Oil? Brand? Best Kind?

[Infidel Strong]

Just recently I got a Mini Baja, I bought it from a guy new. He broke in the engine and that is it. Practically new. Mint Condition.

I have heard that the stock oil that the bike comes with brand new is Junk. So tomorrow I am going to change the oil and go over the bike in general and making sure everything is working fine.

What oil is best? Brand?, It is starting to get cold here in Kansas if that plays a factor in oil I'm not sure. Correct me if I am.

Also the mixture of gasoline, What is the best oil to use when mixing with gasoline? Will it effect the engine if I switch to a different oil?

The current oil I am using is Pennzoil Outdoor Multi- Purpose 2- Cycle Premium Engine Oil, As I was told pour 8 ounces of oil per gallon of gasoline. Is that to much oil?

Please feed me with information

 

[mhornfeck72205]

If you have to add oil to the engine you should not add oil to the gasoline. A 4 stroke engine has the oil in the crank case. A 2 stroke engine has oil in the fuel.

Any 5 or 10w-30 oil should be good. I use Mobil 1 10w-30 in my doodlebug.

 

[Strigoi]

do not put oil in the gas!

these are 4-stroke engines and don't work like that. there's a chance you'll end up hurting the engine.

if you have already run it like that (sounds like you have), i'd be ready to tear everything down to clean/inspect it.

from the internet:

while adding top end (valve train) lubrication, the oil will lower the octane rating of the fuel being used, cause massive carbon build-up, possible plug fouling, and lean mixtures that can cause overheating.

for engine oil, just use straight 30w. i use whatever is cheapest at the time.

 

[Solo Cali]

I run Valvoline 10w30 in my Subaru Robin. I ran synthetic but it would leak out the sidecover for some reason. I switched back to conventional and the leak went away.....like magic, lol!

 

[Oldschool]

New engine that has little or no hours on it.
Drain the factory fill and replace it with #30 non detergent oil.
start the engine. Take the bike for a nice easy slow ride about 10 minuts to warm up and dump the oil.
Check what you drained. You will see some metal flakes thats normal. Chunks burnt smells, gasoline, chunks of wood ect are not normal ( found human hair and sand in one engine )...

Refill again with the same oil and run it about another hour. Slow and gentle, not idling. I like to make short runs of no more than 10 minuts and constantly check for problems adjust brakes tighten anything that may be loose ect.
Drain and check the oil again, There will be more metal but now it should be much finer particals this is normal.....

At this point I would switch to a single viscosity oil #30 detergent oil it doesn't matter what kind as long as its good quality oil. Run the bike again for a few hours and watch the oil closely make sure its full and there are no leaks. Run the bike gently but you don't need to baby it now as much. once you see this oil is starting to darken ( about 2 to 4 hours ) change it again and look it over. There will still be some metal in the oil but it will be finer still and there should be less of it.

At this point your engine is more or less ready to run. It may run hotter than normal because depending on how well the engine is made and the parts used the break in time will varry. The important thing to remember is oil is cheap and you want to keep the motor clean inside without all kinds of metal from machining and break in floating around in there.

On an air cooled engine with no filter like these when the oil looks dirty it is. and you should be changing your oil around every 20 - 30 hours.
The best oils to use in air cooled engines in my opinion are diesel oils because they are higher in Zinc and have more additives / detergents to hold dirt in suspension. For cooler temps 5/30, very hot summer weather 15/40 diesel oil

 

[Infidel Strong]

do not put oil in the gas!

these are 4-stroke engines and don't work like that. there's a chance you'll end up hurting the engine.

if you have already run it like that (sounds like you have), i'd be ready to tear everything down to clean/inspect it.

from the internet:



for engine oil, just use straight 30w. i use whatever is cheapest at the time.

See that is what I was thinking when I bought the bike from the guy.
Well time to tear down the engine :doah:

 

[Strigoi]

i'd just clean the carb and pull the head to make sure everything is ok to start with.

 

[tlizard2]

See that is what I was thinking when I bought the bike from the guy.
Well time to tear down the engine :doah:

Just put in fresh fuel and run it. Doesn't sound like you ran in premixed very long I doubt any damage came from it. Hell, I used to run the premix I drained out of my motocross bike in my push lawnmower and never had an issue. These engines stock are very undertuned and can take alot of abuse.

 

[Infidel Strong]

Update

Alright this morning I went and got some gasoline, Pennzoil 10W-40 Oil and came home to work on the bike :hack:

I went ahead and took out the motor. Set it aside, Adjusted the brakes. Make sure everything was working right. Cleaned her a little bit.

After I did that I went to the engine, Drained the oil and Gasoline. Cleaned the carb, Didn't look bad at all. Thought it would of been worse.

Put everything back on the bike, Adjusted the throttle response.

I then put in fresh gasoline, Then oil. Started her up and let idle for 10 minutes.
At first it was kinda put-put getting used to the new oil.

After the 10 min. idle I road her for about 10 minutes going slow so the new oil can set in. Then opened her UP.

WOW! For some reason seems like there is a little more power. Not a whole lot but I could tell the difference.

Thanks everyone for all the help, Really appreciate it. Maybe someday when I am more knowledgeable I can help others.

Shelby,

 

[Strigoi]

that's good nothing got messed up. :thumbsup:

 

[TT]

Basic rule of thumb:

If it has crankcase oil it's a four stroke and needs no oil in the fuel. If it has no crankcase oil it's a two stroke and needs oil in the fuel. Exception to the rule... Yamaha enduro's had crank case oil and oil injection. I purchased a small generator and looked for the crankcase oil and found no cap, it's a two stroke and needs fuel in the oil.

If it has valves, it's a four stroke and needs no oil in the fuel. Read up and good thing the 40-1 ratio did not gum things up>? You over lubricated the engine and it should run better because oil does not make power, fuel does. Add octane booster about 2 tablespoons per full tank and see how that works..?

TT :smile:

 

[ViperR]

Manual recommends 15w-40 in summer (I use Shell diesel) and will switch to 10w-30 for the colder temps (like it gets real cold here in Charlotte, NC.).