to the point please - oil change 620ie 2002

[cmejia1978]

hi! I am doing the oil changes since the piece of ..... of my dealer did an awful job last time. So please PLAIN and SIMPLE 10W-40 or 20W-50 and please DO NOT refer me to the tech article over the viscosity etc, I already read it and I am more confused now than before! I really don't know which brand or viscosity my current oil is, have no manual either, so a rock-simple advice would do, thank you!

Oh yes, some facts, I live in a tropical country, ride between 2-3 hours a day always between 80-130 km/h most of the time in trafic, air is not that polluted here, yet, and weather is around 20-24C all year long, I ride about 1000 kms monthly, no oil cooler installed, yet, and last but not least I ride during the day, almost never at night...

Thank you!

any advice on how to change it would be appreciated too!   

[Dirty Duc]

I run 10W-40 full synthetic in my small case, wet clutch monster.  It has been pretty happy for 37k miles (~60k kms).

[Heath]

Any 10W-40 Full Synthetic Motorcycle Oil
I like Amsoil 10W-40 Advanced Synthetic Motorcycle Oil. If not available Mobil 1 Racing 4T 10W40 Synthetic. I am not sure what is available in your country I am in the US.

As for How to change the oil..

[Howie]

I use 10W-40 in the winter, 20W50 in the summer.  I suggest you make your choice of viscosity based on the guide in the owner's manual.  Does the bike need to start on a 20^oF day?  If so, clearly you want 10W-40.  Live in the a super hot jungle with lots of traffic?  20W-50.  Anything between?  Not so important.

[Slide Panda]

Live in the a super hot jungle with lots of traffic?  20W-50.  Anything between?  Not so important.

The OP stated they live in a tropical country, where it gets no cooler than 20C (68F). And if it doesn't get any hotter than 24 I'd say 10w-40 - but as noted your owners manual will have temp ranges listed. All that being said, I always run the Mobil 1 moto 10w-40 in my 900 and it gets pretty hot here (Mid Atlantic US) in the summer. If I hit traffic, I have pulled off for a cool down.

[cmejia1978]

Thank you everyone, just one childish question: my bike is a 4T or 2T ? sorry I really don't know, REALLY!  thank you!!!

[Heath]

It is 4T
4T = 4 stroke = gas and oil separate
2T = 2 stroke = gas oil mixture for fuel (think smaller dirt bikes, chainsaws, some weed wackers, ect..)

[militar3rd]

Thank you everyone, just one childish question: my bike is a 4T or 2T ? sorry I really don't know, REALLY!  thank you!!!

Almost every bike, at least here in US is a 4 stroke.  4T

[Slide Panda]

They are not in the us.... But all monsters are 4 stroke.

[militar3rd]

They are not in the us.... But all monsters are 4 stroke.

Sorry, almost all Street Legal bikes are 4T?

Doesn't prohibit me from riding my buddy's nsr 250 down the street. 

[cmejia1978]

thank you all for the clarification, ok, last question, how many quarts do I buy??

[Slide Panda]

4.

Bike will take 3 and a fraction

[cmejia1978]

thank you so much Panda and all of you for the little tech help, today is holliday in my country but will begin to drain oil right away, tomorrow will buy oil! thank u! 

[cmejia1978]

oh oh oh, I have oil leaks, this is the reason why I am doing the oil change, my dealer does not have gasket kits but does everything with silicone, stupid, anyway... does anybody know where I could buy a gasket and seal kit? Thanks!

[ducpainter]

There are at least 3 major surfaces that has no gasket installed at the factory.

None of the vertical case joints use a gasket, but are sealed with a sealer...not necessarily silicone.

Where is it leaking?