What oil to use? - .: XT660.com

Badgerflame · # 1 05-09-16, 22:35

Hello,
I have a '05 xt660xx, I know i need 10w40 and see motul 5100 is recommended.

But i'm seeing contradicting info on using synthetic or semi-synthetic oil, what's the best?

Thanks

Pleiades · # 2 05-09-16, 22:52

Nothing wrong with synthetic motorcycle oil. Most of the confusion comes from people using synthetic car oils with friction reducing agents (labelled 'Energy Conserving') which will knacker your wet clutch in no time - Just ask steveD! If buying synthetic, make double sure you check it is marked JASO MA2 which is suitable for (and tested on) motorcycles with wet clutches and shared lubrication of gearboxes and engines.

Question is, does the XT need (or benefit) from synthetic? Probably not. IMHO, save your money and get a good quality semi (like the Motul) and change it often.

Badgerflame · # 3 05-09-16, 23:01

Got an answer and I learned something, result

cheers mate

Martin81 · # 4 03-11-16, 19:49

Quote:

Originally Posted by Pleiades

Nothing wrong with synthetic motorcycle oil. Most of the confusion comes from people using synthetic car oils with friction reducing agents (labelled 'Energy Conserving') which wi ll knacker your wet clutch in no time - Just ask steveD! If buying synthetic, make double sure you check it is marked JASO MA2 which is suitable for (and tested on) motorcycles with wet clutches and shared lubrication of gearboxes and engines.

Question is, does the XT need (or benefit) from synthetic? Probably not. IMHO, save your money and get a good quality semi (like the Motul) and change it often.

I goofed up a bit and put car oil in my tenere before winter storage. Figured any 10w-40 is just 10w-40...guess I was wrong. Looking at the car oil it says semi-synthetic plus that ominous "low friction" stuff. Damn.

To the point: I never drove the bike anywhere after the change. Simply let it idle a couple of minutes then removed battery. obviously I'll change the oil ASAP but do you think the clutch may have suffered already? I guess I'll notice in the spring but if so it would be easier to fix it now when the oil will be drained anyway.

Pleiades · # 5 04-11-16, 00:04

Quote:

Originally Posted by Martin81

I goofed up a bit and put car oil in my tenere before winter storage. Figured any 10w-40 is just 10w-40...guess I was wrong. Looking at the car oil it says semi-synthetic plus that ominous "low friction" stuff. Damn.

To the point: I never drove the bike anywhere after the change. Simply let it idle a couple of minutes then removed battery. obviously I'll change the oil ASAP but do you think the clutch may have suffered already? I guess I'll notice in the spring but if so it would be easier to fix it now when the oil will be drained anyway.

You might get away with it if it hasn't been run for long. Just depends on how much oil, or should I say friction modifiers, the clutch plates have soaked up/been coated with?

Here's SteveD's experience of inadvertent use of "Energy Conserving" car oil in the XT...

http://www.xt660.com/showthread.php?t=23476

Dual · # 6 04-11-16, 05:45

I use full synthetic oil in my bike, might that contribute to clanking noise?

nikroc · # 7 04-11-16, 08:37

My Brother only ever puts car oil in his Hyabusa..nearly 100k on the clock and no problems..

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