Urgent question - Bike oil?

[riffer]

FWIW I reckon the don't use synthetic argument is completely fallacious.

But I don't have a new bike.

Any oil that conforms to the JASO MA spec should be fine for a bike.

[justsomeguy]

FWIW I reckon the don't use synthetic argument is completely fallacious.

But I don't have a new bike.

Any oil that conforms to the JASO MA spec should be fine for a bike.

Fully synthetic oil used too soon may damage the bores. Hence it is recommended after 6,000kms. Some head mechanics advocate use after 10,000kms.

[jonbuoy]

I thought synthetic was only to be avoided until the rings had "bedded" in? Slightly off topic but interestin' none the less:

http://www.tampabaybritishcarclub.co...tech_tips.html

[james89000]

I do notice, that every say 500km, i have to top up my bikes oil by maybe, 100ml.
Im using semi synthetic, does this just mean its burning it off here and there ?
Or is 100ml excessive, and do you think ive got a leak?
The total oil capicity is around 1100ml

[justsomeguy]

I do notice, that every say 500km, i have to top up my bikes oil by maybe, 100ml.
Im using semi synthetic, does this just mean its burning it off here and there ?
Or is 100ml excessive, and do you think ive got a leak?
The total oil capicity is around 1100ml

It seems like a lot. How many kms has your bike done? What is your riding style?

[Pussy]

I have always used mineral oil up to 6000km, then Castrol GPS semi-synthetic after that. The mineral I have used is Spectro 10W40. Best to get modern hard plated bores to bed in before switching to synthetic

[james89000]

It seems like a lot. How many kms has your bike done? What is your riding style?

Umm, its done 15000km, and being a 150cc, I am usually pushing the engine quite hard.
But never redlining

[doc]

Hi the old bike needs an oil change.

It's done about 4,000kms and the oil looks crap although it's only been in there for 2,XXXkms.

I was advised by the shop to use mineral oil until 8000kms "to help things bed in." (Whatever that means).

Motul was the recommended brand.

-----------

Can someone please verify this?

Off to the shop soon to buy it.

Thanks in advance,
JSG

WTF , you have over 5000 posts on a bike site, and you ask for advice about oil and question, the advice of a bike shop. Why do you think the oil looks like crap ? 4000km does not make a bike old. People on this site chuck off at the HOG guys cos they only ride in the weeked. The advice to use mineral oil until run in then go synthetic is quite the norm. Some bikes are run in at the first sevice, 8k seems excessive.

[justsomeguy]

WTF , you have over 5000 posts on a bike site, and you ask for advice about oil and question, the advice of a bike shop. Why do you think the oil looks like crap ? 4000km does not make a bike old. People on this site chuck off at the HOG guys cos they only ride in the weeked. The advice to use mineral oil until run in then go synthetic is quite the norm. Some bikes are run in at the first sevice, 8k seems excessive.

Wassup Doc?

I always ask questions bud, don't ask, don't learn. Just cos someone works at a bike shop doesn't mean they are an expert. If two or three bike shop head mechanics say the same thing, which then gets reiterated by people here who I personally know are really knowledgeable on these subjects, then I know to take the advice. I'm too poor to "test" things.

I am one of those people who only ride on weekends, sunny ones too. I HATE commuting. First I get too much aggressive attitude from people trying to drag race me and swerve in front of me, secondly it wears out my tyres, thirdly I hate riding slowly, fourthly riding a bike that's been custom tuned to nudge 300kmph at 20kmph through Sydney's SHIT traffic 50kms on straight roads each way to work is a punishment and more expensive than taking the train. I love my bike a bit too much to put it through that.

Used to run Plutoline Semi Synthetic in my older bikes, except my first 250 which did fine on mineral oil. The oil is probably fine but has been through a trackday at least once, just got a few false neutrals and considering I have some tracktime booked I wanted to be ready.

I just want the best product in the bike to make sure it works when I'm on the track, a false neutral coming out of a corner or going into one scares me.....

[justsomeguy]

Umm, its done 15000km, and being a 150cc, I am usually pushing the engine quite hard.
But never redlining

Still sounds a wee bit high, but not abnormal.

[NSR-Dan]

clutch slippage?? bring on the dry clutch i say

[justsomeguy]

clutch slippage?? bring on the dry clutch i say

Is that something out of the scary world of two smokers?

[Drunken Monkey]

Fully synthetic oil used too soon may damage the bores. ...

Think that's only true of older engines. Many cars ship with fully synthetic form the factory, e.g. it's well known that Porsche recommend Mobil1 fully synthetic from mile 0. More important to change the oil if it looks dirty than worry about if it's mineral/synthetic/etc... = assuming you are using the correct grade, of course.