Broad,observational statement ...i consider myself repremanded

:spanking[1]:





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No need to feel reprimanded � that wasn�t the intention. It was/is a valid observation. It�s just that there needs to be a careful and rational balance between observation, opinion and fact. As many people use this forum as a technical resource they need to be aware of all relevant evidence and information (both observational and factual) in order to make their own informed choice as to what course of action to take, whatever that may be.

It�s a bit like saying � �I smoke forty a day and haven�t got cancer, so therefore smoking is fine and doesn�t cause cancer.� When all the evidence is considered, smoking is clearly not fine and is going to significantly increase your chances of developing lung cancer. But it is �chance�, there are plenty of people who have smoked all their life and never get cancer. Looking in a balanced way at all the evidence allows you make a decision that, whether taking up smoking or using car oil in a bike, will improve the odds in your favour.

The subject of oil always throws up a healthy debate, which is good, so long as those seeking advice on the subject weigh up all the pros and cons of what is being discussed.

So which oil should you put in your XT?

Whatever you want� but consider the evidence first.

Dual, are you going to change it to wet clutch bike oil? (just teasing you!)

Very interesting what Pleiades explained about car engine oil (they have dry clutches separate from the oil) and bikes with wet clutches which do not need extra non-friction modified oil.

I'm confused, the local Midas manager told me it would be fine to use the Magnatec in the bike, and it's not cheap oil
It looks like clutch slipping is the concern? I'm not having any clutch slipping as this seems to be the problem. Are there any other dangers to using this oil?
We looked at he spec of 10W-40 and was advised to use it
I would appreciate any form of advise and info from your guys here and are quite happy to drain the oil and put in what's the right oil

It may well be fine. After all, it isn't an "energy conserving" oil which are the main enemies of wet clutches. But then again, it might not!

Not helpful I know, but as I've said earlier in this thread, car oils and their behaviour are a bit of an unknown quantity in bikes - they're a bit of a gamble. Some work fine, others don't. Depends how much of a gambler you are I guess, as to whether to swap it or not?

I certainly am not a gambler when it comes to my bike
I drove about 200 km's today with wife as pillion, not once had any issues as to slipping clutch, and we had some places where I had to use the clutch on a hill to get out, so, I hope this is the only concern, I'm a bit worried now

Magnatec data sheet

https://c6.staticflickr.com/6/5453/3...d5a808b3_b.jpg

Personally I have only ever used bike specific oils over the past 30 odd years of riding a bike,and I change oil and filter before the recommended intervals.

I also change the oil and filter every 6 months on my car too.

OCD behaviour maybe but for the �25 for oil and filter,for both car and bike respectively its cheaper than an engine rebuild and turbo on the car.

As mentioned before, this is a good example of how vague oil companies are. The trouble is manufacturers never actually say what's in their oils (the chemical composition) in their data sheets; they just give you a sales pitch, so you can't really ever be sure what the magic "magnatec molecules" actually are.

The third bullet point is what my attention is drawn to. "Bond to metal surfaces to make engine parts more resistant to wear", sounds very much like the "magnatec molecules" might be some kind of friction reducing agent, but who knows? Not ideal if these molecules bond to your steel clutch plates and reduce friction.

Issues with incompatible oils rarely show up initially, only after a good few hundred kilometres once it's been fully distributed around the engine, gearbox and clutch. It takes time for friction improvers to build up on internal surfaces. It took SteveD ( http://www.xt660.com/showthread.php?t=23476) about 4-500 miles before he noticed his clutch was slipping after an oil change where "energy conserving" car oil was used by 'mistake'.

I'm in the buy good JAMO spec oil when its on sale. I've shopped mailorder from louis regularly and i've used their fully synthetic 10w50 for years

67100km on 3AJ XT600 & 67600km on a xtz750 with oil and filter change every 6000km

Last time i bought 4 x 4 liters and a few other items. My wife wasn't to happy after picking that one up at the post office ... But at 30€ for 4liters it had to boosts stock.

Last year was the first time i changed oil on my "new" xt660z and used the same oil (and filters) and its about time for another change again (latest at 10.000km according to yamaha - so i go with once a year if i ride less.)