magnatech oil

[old-git]

i have been putting castrol magnatech oil in my bike since it was new ,in the hope that it will last longer .
its a kymco 125 ..same engine as a cg125.
i have had it five years and done 25000 on it ,
but wonder if its just a waste of time, and just use any 4 stroke oil .
what do ya think then
____________________
live long and prosper .

[mchaggis]

I was always told that putting in Castrol GTX Magnatech was bad for wet clutches as it has special slippery additives in it. I don't know how much truth there is in that, but normal Castrol GTX keeps the CG lump in my bike happy.
____________________
I must not be a troll...
Mmmm, Guinness
Discovering the delights of Hammerite and a 3/4" brush.

[MarJay]

Is it a car or bike oil?
____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[old-git]

[G]

It is car oil as far as I know.

It may mean your clutch will wear faster, but on a bike with not much power it's probably not going to be too bad.

Regular oil changes are probably more important than expensive oil.

Definitely avoid the expensive car oil in higher powered bikes as it can easily make the clutches go.

[MarJay]

[old-git]

but why would the clutch wear faster if the oil is more protective ?
____________________
live long and prosper .

[mchaggis]

It's more slippery than normal oils, so the clutch won't produce as much friction between the plates, meaning that the clutch will slip more easily with less speed difference/ torque applied. More slipping the clutch means more wear.

If it's metal to metal contact (such as between the piston rings and cylinder or in the bearings), then the extra slippery stuff will help to protect them by helping them to float over each other rather than grinding.
____________________
I must not be a troll...
Mmmm, Guinness
Discovering the delights of Hammerite and a 3/4" brush.

[G]

The oil has 'friction inhibtors'; basically slidey stuff.

Bike clutches are 'wet clutches'; they are immersed in oil. If there's extra slippyness here, it means they can start to slip when they should be fully engaged. This leads to increased wear as they are slipping all the time.

[old-git]

yes i see ,..but i dont think the word torque can be applied to my bike ....more talk than torque
____________________
live long and prosper .

[Scotsman37]

One recommendation I do have is to stay well away from Halford's own make of engine oil as you'll definitely lose about 10mph off the top end. I sadly found that out several years ago when I had a 125.

After discovering the downturn in speed using Halford's oil and when it came to point of time after travelling for a few months I changed the oil again, but filled it Castrol's GTX Magnetec engine oil and within a short period of time I regained that top end speed back and kept using Castrol's oil from then on.

Good quality engine oil gives you the best possible performance from your bike and that's why Silkolene is such a good make for all bikes. I now only use Silkolene for my 550 bike and several outlets in/nearby Glasgow that sell/repair bikes only use Silkolene.

Regular engine oil changing is a must because the quality of the engine oil degrades over time i.e. It may no longer stay thick when the engine is being pushed to it's limit and/or it will become so thin/useless when the engine is being started from cold may no longer stop friction at the outset to prevent parts being worn out!