Well,technically, i dont have much knowledge on these,but after switching to Castrol Power ONE,I can really feel the difference.
I agree With @Abhisek, that the top speed increases(Mine is 133kmph now).
pickup really improves.
Bike feels comparatively(though not much) smoother,at 60kmph.
I wont argue much,may be the service people have made some changes in mixture or anything.But its really feeling like never before...

1. Top speed depends upon lots of factors, tail wind, bike pulled at each gear,cross wind, road,riding position etc.
You cannot achieve same top speed at the same road sometimes.
So if you got bump in the top speed by 4-5kmph that was not because you changed the oil, but that was cuz of better road, less wind, or simply you rode it more bonkers.

2. Switching from W30 to W40 or from W40 to W50 wont improve or dent the pickup, like i said earlier one cannot shave even 1/4 of sec from the 0-60 timing just by playing in W30-W50 range.

It generally happens, one gives bike for servicing after 2000-3000kms, till then the chain looses the lube, the air filter gets clogged, clutch play increases that results in dent in acceleration and top speed, but the moment bike comes from service the chain is now well lubricated, air filter is now clean, clutch play is now adjusted so the pick up increases, bike runs more smooth, gearshifts become more nice (due to the right clutch play).

So the oil isn't playing any role in improving the said things, other factors are.

At the same breath, it isn't recommended and should be avoided.

If done, flush and get a new oil and filter.

You got to be kidding me....
Was an example, who's gonna mix them and pour anyway...

But could you be more specefic that how different brands of same W40 oil (mineral with mineral or semi synth with semi synth or synth with synth) when mixed together will harm an engine?

It wont be doing any harm.

what oil dose not make gearshifts smooth it is due to right clutch play
and that also done on service

mine was serviced 3 weeks ago and week after that i went for xbhp g2g
with the bike runned 150km from service. their every body took ride of my bike cus it is only tvs their and all were complaining about harshness and hard gear they say to change oil and again day after g2g i went to castrol bike point and buy power 1 and poured it their they just poured oil and not even touched my bike from any where. and after running 100 km i started to feel difference and on yesterday g2g again every one took a ride and they say it feel different from last week ride less harshness and vibs and smooth accleration. if you want clue just ask on delhi offline g2g thread .they will tell you how it has become different after changing power 1. and they are fan of my bike and now a new rtr180 is comming in our g2g. on this diwali parteek2210 is planing to buy it


in bolds
check the oil thread on first page the power of power one racing which says increase in accleration
man oil dose make difference.good oil make rev happy nature of bike thats why good accleration

+1 @abhishekch
i dunno about other engine oils, but when i had used power1 for my bike i did feel smoothness in gearshift n better performance n smooth ride...
but when i put agip i didn't see much difference. i noticed a MAJOR CHANGE when i had put castrol power1.

i think oil does make a difference.........

It's all about the "feel" one gets after pouring the oil, cuz we have already heard so much about the POWER 1 oil, like it does make the gear shift smooth, it does make "improvements" in the engine, we have read this on the respective threads, we have read this on the oil can, so when we pour that particular oil we think yes man this thing does make a difference.

It's more of a Physiological thing, the oil may make engine sound sorta "comfy", will make your tappets sing loud or soft, and may improve the FEEL of the shifts.

Lemme give an example:

An oil company comes to indian market with a name "CASTRONAS", and launches oil in W40,W50 and W30 grade, but doesnt gets place in oil threads and peoples mouths.
You go to the market, get the can of it, pour it to the engine, and feel nothing.
You feel like ok, it's a everyday oil.

The CEO of CASTRONAS gets worried and ropes in Mr. ROSSI for it's brand, along with a new can that looks it costs a 1000 bucks.
Now you get ROSSI's statement about the oil that this oil makes the engine smooth and helps in improve the top speed and acceleration, and you even spot CASTRONAS written on the belly of the fairing of his race bike.

Now the oil gets lil more recognition and gets place in auto mags where you get paid up journo's screaming about it's performance.
Then you see it getting featured in the oil threads and you read various owners report that they really felt improve in acceleration and top speed.

Now, the things gets more interesting when three of your frnds also tell you that hey bud! this oil is great! my bike is making more power!

You get really excited about the oil and you go to the oil shop and you get the can of it.
Now this time when you pour it, you really feel that this oil has improved the acceleration, and top speed of the bike.
And hey it even made the shifts smooth too!!!!

Whereas the CEO of CASTRONAS takes a sigh of relief and calls his marketing man, thanks him his heart out who suggested him to rope Mr, ROSSI, and provide some stuffs to the journo's.

And they both were spotted doing this while looking at their sales graph.

.... Hell of discussions going on here..

A few things to clear apart:

Apart from a oil being Synthetic there maybe difference between the two, Like, let us take Motul 300V (group 5) and Castrol Power 1:

There are 5 categories of oils; Group 1,2,3,4,5 where group 1 and 2 being mineral products the synthetic line-up starts from group 3 that are itself processed form of group 1 oil.

Group 4 oils are mostly PAO oils (synthetic), in short and simple they offer better protection than group 3 synthetic oils. But, remember one thing that both group 3 and 4 are synthetics which have different properties.

Group 5 oils contains Esters and are the best of the lot of Synthetics. Motul 300V is one of them. Therefore, you could easily predict why there is a difference between Motul 300V and other fully synthetic oil from Group 3 base.

Finally, A oil which is synthetic and costs lesser than a oil which is twice of its price (under normal conditions of no import or export duties) and there is considerable difference between the performance of two. Then, you can straightly tell that the oils belong to different groups. The better one has higher group.


P.S: If there is any misconception in the information I conveyed then please correct it.


Thanks.

To make things clear for you,

We're not discussing the groups and categories of oil in here.

We're discussing:

"What an oil has to do with the performance, acceleration, top speed, gearshift smoothness, of the engine"

Thanks for the info of the oil provided but this doesnt belong here,You can cut copy and paste this info to the oil thread.

(Lol......) I was just trying to convey about different category oils. As someone was saying that he poured 2 different oils and felt better difference, I mean that this is ought to happen if the oil belongs to a higher group. Anyway, for me a oil makes gearshifts smoother, smoother acceleration, smoother revving, and overall smoother feel. Nothing more than that. Just a personal opinion. Thanks.

You said it!

Guys i have been using Castrol Power 1 racing for around 2k kms. Got it on 11.5k kms. And before that i was using TVS oil. There is a significant change in the bike behaviour when i ride her for long hours continuously. There is not even single drop in perfromance and even after prolonged usage the bike accelerates way to wildely , like i have rode her for just 10 or 20 kms. After hard riding the engine get way to heated up but the oil maintains its characteristic. After constant usage of brakes and gear shifts, bikes goes from 60kmph to 105kmph in no time, its like in a blink of an eye.
Sometimes she gives me a feeling that i cannot handle her and definately going to bang on to something.

And i was missing all these things when i was using TVS oil.
And regarding the "Physiological" thing until you "Feel" something you cannot say what have changed.

@ renny., are you saying that all oils are the same and there's no MAJOR difference between them??

i am sure that you too have used tvs tru4 oil and later on shifted to some other oil., now tell me, DIDN'T YOU FEEL ANY DIFFERENCE IN THE BIKE AFTER USING A DIFFERENT OIL??

all I am saying is that what i felt from my bike... it was a major noticeable difference when i shifted from tru4 to other oils..

and till now i have tried 3 oil brands and i have got different experience from all 3

There will be change in the feel of the bike. The engine will smoothen out abit or more. But, there will be no increase in POWER of the bike. That means that if you use best oil in the market, you will notice that at a particular RPM your bike is more eased and that is due to better lubricity which brings smoothness and at the same time donot expect that it will eat all the vibrations and other tid-bits of the bike because it is designed to behave such a way and one cannot change the characteristics of bike without changing the mechanicals, only by changing oil you can improve the FEEL, yes that's what all about and Nothing!

who's talking about 180cc becoming a 1800 cc here???................!