Dear one I did not tell u to use any car lube in the bikes.
I simply quoted the new standard's qualities w.r.t 10w 30

Don't pick words and comment .

Now , coming to the matter u expressed doubt of more mileage in using 10w30 than 20w40 . is for which I commended.(though partially, as i had to attend to some thing else at that time)

The fact of the matter is 10 w30 the base viscosity index is 10 and for getting the 30 grade what is done is adding additives (VII , viscosity index improver). Additives are very long chain molecules than lube oil molecules . which helps to provide a film on the surfaces even at high temperatures. while the engines work these long chains get cut and there by lose the high grade viscosity index.

where as 20w 40 is concerned the quantity of additives used is less . as the base viscosity index is 20 and to make it to 40 you need less additives and hence the chances of degradation .

(V.I . 10 means it will flow even at -16 degree centigrade and V.I. 20 means It will flow till zero degrees only . but in India we don't have these low tempt. )

In lay mans words 10w 30 is thinner to flow ,hence it gives more mileage though less in % terms ,sacrifices engine life,if oil is not changed very often as per your use. where as 20w 40 is more thick and gives comparatively smoother engine and more life for oil and engine though a little reduced mileage .( Hope you can see the commercial interest in the recommendation of 10w30)

Even though I am an Engineer I was in teaching profession for more than 20 years , that why these type explanations . If you don't like it , I will not do it again.

@Aneesh I changed it previously during the first service @ 600kms and its now 1450 on the odo
@itssaurabh: What type of oil u changed yesterday is it 20w40?

We are talking about bikes here,no need to present standards of car engine oil.


So you mean 20W40 degrade faster than 10W30 oil?

But still Honda uses 20W40 oil ,Pulsar uses 20W40 and 20W50 i guess,HeroHonda recommended 20W40 oil for their older models,Now they are using 10W30 oil.hm..can, you explain how a thinner oil increase mileage?Even thee are ZMR owners using 15W50 in their bikes and getting very good milege results.



Its time to do an oil change. Change oil bro .

Shall i go for the normal 10w30 HH oil or go for 20w40 if 20w40 which company u recommend?

Not sure about that additives,as per my small knowledge the first number is the cold thickness weight. The end one is when the oil is warm after running for a while. Gurus need reply!

Stick to 10W30 till runin period is over,because 20W40 during runin period in my friends karizma had given him a harsh engine,he shifted to 10W30 and harshness gone,So Get Gulf Pride 4T Plus 10W30 Mineral oil.

Gulf Pride 4T is better than HH 10w30 engine oil?? and the run in peroid lasts till when?

Yes,Gulf is better than HH Oem Oil! I am using Gulf Pride 4T Plus 20W40 in my karizma for past 2000kms,small change in color,Still going strong. continue runin period till 2000kms and now you can give some sudden burst to 100kms/h and go back to normal speed and continue it till 2000kms. and i guess its the best way.

oh thanks for the info bro and how much does gulf pride 4t 10 w 30 oil cost and should i use 20w40 from the next service which is scheduled at 2500-2700 kms?

Not sure about 10W30,20W40 costed me 215rs and i got a coupon of 15rs off inside the bottle. So got it for 200rs. I hope Gulf will last till 3000kms. Try 10W30 now,if you are feeling discomforts,then we can try 20W40 next time.

Thanks bro! But the svc guys will change the oil during service na which is scheduled at 2500-2700

Welcome bro. Changing oil wont harm your bike,it will keep your engine perfect,So if needed, change it @ 2500 or 2700kms.

No i mean they will change it to hh engine oil again right? then i need to buy again gulf 4t 10w30?

Will your svc pour gulf oil if insisted? Some svc's will do that,but some wont.So enquire that first,If not,then continue using HH 10W30 oil.

Yeah they will or else i will pour the oil in their mouth and few more question from when should i start using 20w40 and if gulf isnt available what oil company should i use?

Then no problem!

When ever you feel discomfort using 10W30,I mean overheating,vibrations etc.you can shift to 20W40,or you can try 20W40 @3000kms. or @ next oil change.

You have Shell Advance AX7 10W40. Not sure about the price