Best oil for my Suzuki Bandit 250?

[mrchips]

Haven't taken it for a decent smash on the open road yet.

I wouldn't be in too much of a hurry to do that !

Castrol Power 1 GPS 10W-40. It's semi synthetic. I get it from supercheap & used in both my bikes..... haven't blown up yet so must be o.k.

They have a cheaper castrol 4t dino oil if you are running it in.

[LBD]

Not really dude, a good quality Oil will lubricate the engine quicker at cold start up than a poor oil, start up is when most engine wear occurs, especially in cold conditions as we have now.

Quality of the oil has nothing to do with how fast oil circulates around a cold engine, fluidity is descrbed by the visosity and viscosity index, and if that is something you are conerned about, check out the pour point of any chosen oils....I happily use 15W40 oils to minus 25C....any lower and we use crankcase heaters.

[Quasievil]

Quality of the oil has nothing to do with how fast oil circulates around a cold engine, fluidity is descrbed by the visosity and viscosity index, and if that is something you are conerned about, check out the pour point of any chosen oils....I happily use 15W40 oils to minus 25C....any lower and we use crankcase heaters.

A component of a good quality oil IS how fast it can circulate around a cold engine.........there are other components also of course, are you saying that a high viscosity oil gets around a cold engine as fast as a low viscosity ?
and if you are then sorry youre very incorrect.

[bsasuper]

I now use mobil 1 4t 10-40, now that it is easier to get (repco)

[Quasievil]

I now use mobil 1 4t 10-40, now that it is easier to get (repco)

Cewl, thats my account, they wanted all Car stuff I said hey here is an idea lets do some Mobil 1 4T woo hooo, you can get V twin there to now as well

[mrchips]

I now use mobil 1 4t 10-40, now that it is easier to get (repco)

How much is mobil 1 ?

[Owl]

I now use mobil 1 4t 10-40, now that it is easier to get (repco)

Repco would always get it in if you asked!

[TimeOut]

How much is mobil 1 ?

Repco = $100 for 4l $80 on CRT

[LBD]

A component of a good quality oil IS how fast it can circulate around a cold engine..........

Quality has nothing to do with how fast an oil circulates...that factor is purely a function of viscosity and viscosity index. A "low quality oil" that is low viscosity will pump around a cold engine faster than a premium oil of a higher viscosity.

And of course a heavier viscosity pumps around an engine slower... which is a factor in cold start ups. as I said, I use 15W40 to minus 25C, but rarely do we shut down an engine and allow the engine to chill to minus 25C

[Quasievil]

Quality has nothing to do with how fast an oil circulates...that factor is purely a function of viscosity and viscosity index. A "low quality oil" that is low viscosity will pump around a cold engine faster than a premium oil of a higher viscosity.

And of course a heavier viscosity pumps around an engine slower... which is a factor in cold start ups. as I said, I use 15W40 to minus 25C, but rarely do we shut down an engine and allow the engine to chill to minus 25C

Not entirely correct their are other factors here that need to be considered to

a lower quality oil can become thicker than a quality oil of an equivalent viscosity grade at a low temperature, there fore slower to circulate and lubricate an engine this would be partly due to the additive package in that particular oil.
Also a low quality oil will have a quicker oxidation process than a high quality oil, these will also affect the lubrication performance at engine start up.
Degradation of Oil is different for a variety of reasons, partly the engine itself and partly due to the additive package of the oil.



its not just about viscosity

[awa355]

Cewl, thats my account, they wanted all Car stuff I said hey here is an idea lets do some Mobil 1 4T woo hooo, you can get V twin there to now as well

I was in Repco's in Te Awamutu today. They had Mobil 1 V twin oil ( full synthetic )for about $27.L. It is a 20w/50 grade. Would 20/50 be suited for the tempertures here in the Waikato?

20w/50 is one of the oil weights listed in my handbook rated for 0c - 50c range. 3 litres would cover a oil/filter change on my cruiser and is not much dearer than the Castrol semi 10w/40 $64.00.

[Quasievil]

I was in Repco's in Te Awamutu today. They had Mobil 1 V twin oil ( full synthetic )for about $27.L. It is a 20w/50 grade. Would 20/50 be suited for the tempertures here in the Waikato?

20w/50 is one of the oil weights listed in my handbook rated for 0c - 50c range. 3 litres would cover a oil/filter change on my cruiser and is not much dearer than the Castrol semi 10w/40 $64.00.

Hi yeah no problems.
it only comes in one grade also that being 20W-50
get a quality oil filter to mate i.e genuine part or a good aftermarket one.

[Owl]

get a quality oil filter to mate i.e genuine part or a good aftermarket one.

Are the Mobil 1 filters available here? If not, they should be!

[Quasievil]

Are the Mobil 1 filters available here? If not, they should be!

We dont do filters mate sorry
let me know how you get on tho ok.

[LBD]

a lower quality oil can become thicker

A new premuim oil and a new cheap oil, to the same API std with the same viscosity and viscosity index will emonstrate the same viscosity charactoristics over the range of operating temps.

What does change is how long an oil will maintain the stated viscosity. That is where quality comes in to play. Extreme service or extended service intervals will likely affect the VI of the lower quality oil sooner, that is why used oil anlysis includes a viscosity check to advise how well the oil is coping with its work load.

at the end of the day it is the correct viscosity of the oil in service that maintains the film thickness