Oil recommend?

Question

I need to change the oil in my GSX-R 1000, I have no idea whats in there now and I need a recommend on what I should use??

thanks!

Answer 1

Wow, synthetic is too slippery for your clutch. That's a good one.

I would stay with a stock filter and 10/40

some filters do not flow the same. yes the wix may be a great filter but does it flow as much oil? It may filter better because it may have more media. but it may be very restrictive.

the factory race teams run the stock filter for a reason. It's proven to work on their bike!!!!!!    

Most factory backed race teams are running full synthetic

Mladin and Spies have some good mechanics on their teams (they are prob. better than yours and mine) and they run full synthetic.  I wonder why they do that?

Motorex is their brand. I have been in the pits and seen them open the quarts and pour them in. For some reason full synthetic is just fine for a 240 hp factory race bike and it's clutch..... But for some reason you should not run it in your bike.

Go with the full synthetic you will be fine.

37 years of riding and wrenching w/full synthetic in everything I own

Here's a little on filter and drain back valves

http://www.calsci.com/motorcycleinfo/Fil...

Go to AMSOIL.COM and read their section on filters and flow  rates/efficiency.

Cheap filters with pleated paper elements  will flow less than a high quality filter such as amsoil......

Answer 2

Any top brand oil, 10 - 40 summer; 10 - 30 winter. My preference is regular oil not synthetic. Maybe things have changed but leaving oil in the bike for a long time doesn't seem right. Change regular oil at 3000 miles and you can't go wrong.  Oil gets dirty, not changing it means its real dirty. I think that is why synthetic oil is black so you cant tell if it is filthy.  One of my Harley Buddy's runs synthetic oil and in this way he can use the same oil throughout. For that application synthetic is OK.

Answer 3

semi synthetic or fully synthetic.

silkolene, motul etc.

Answer 4

If the bike is new, use the Suzuki oil from your dealer.  This will help avoid warranty problems if you have any catostrophic problems during the break in period.  Stay away from automotiove synthetic oil.  It will damage your clutch.

Any good name brand oil will work as long as it is not synthetic oil.  This is because most motorcycles, including yours, use a wet clutch.  The clutch is bathed in the engine oil to keep it cool.  Synthetic oil is too slippery for your clutch and will cause it to slip and burn.  This will cause the clutch to fail much faster than if you use conventional motor oil.

If you feel you must use synthetic oil, use Mobil 1 Racing 4T 10W-40.  This oil is specifically designed for use in motorcycles and won't damage your clutch.  This would be a good choice for your application.

For viscosity you could use 10W-30 or 10W-40 oil.  The second link explains oil viscoscity.

If you are looking to get more life from your engine, the oil filter is more important than the oil.  Don't get me wrong, the oil is also important.  Use a Wix oil filter when you change your oil instead of the filter you get from your dealer.  If you go to the Wix website, you should be able to cross reference a filter for your bike.  These filters will cost more than some of the more common filters like the ones from Fram or Purolator.  But if you ever saw them side by side, you will see that they are worth the extra few bucks.  They are still less than the cheap made in China filters you will get from the dealer.  Once you get the correct Wix filter number, you can order it from any automotive parts store that sells Wix filters.  Yes, Wix is better than a K&N oil filter.

Answer 5

51 is the only one that seems to know

10/40 any brand of motorcycle synthetic

pic a brand and stay with it

car oils can't withstand the shearing of the gears in the tranny

they don't have the right anti foaming agents required for use in a  bike

  

too slippery????

car oil??????????

cheap filters aren't restrictive?????

Answer 6

I have been riding and working on bikes for over 9 years.  I've seen several different combinations of what people prefer.  Truth is the filter is the most important part here.  Wix is indeed perhaps the best filter for any engine.  As far as for your oil...you have to consider Royal Purple.  It keeps the engine cooler than any oil I've seen and we have ran test at my shop between Mobil 1, Castrol, and Royal Purple.  You may prefer your own combo though.

Answer 7

Synthetic oil and a Purolator "Pure One" filter.

I use sythetic (Rotella 5w40) in three Hondas.  Synthetic performs better in wet clutches than dino oil.

You may want to go with Amsoil , or Motul synthetic blend.

The issue with cheap filters isn't the rate of flow so much as the type of filter material and the size of particle it will remove.

Answer 8

Mobil 1

Answer 9

you can find your original brochure in the Internet and find the correct oil weight. sometimes it depend on the ambient temperature you are.

Answer 10

Find a manual,.,.,. if you can't then call a couple of different dealers and bike mechanics. I don't care for synthetic, BUT I do know folks that swear by it. I don't mind changing my oil that way I can stay on top of all maintenance issues{check everything while changing oil}. Asking this type of question on the Internet will get you many different answers. Most would probably work but if you choose the wrong one, then..........well it's your bike.

Answer 11

personally I like rotella for my bike...

Mobil 1 is good too, just make sure you get the regular synthetic, not the "high mileage" or "fuel economy" hybrids with friction modifiers (they will make your clutch slip)

Edit: Mad Jack has just enough knowledge to be wrong here...

synthetic oils are fine, "friction modifiers" are what you're trying to avoid, and friction modifiers are most commonly used in synthetic oils...as opposed to conventionals...

edit2: Nate, how do you know what our knowledge base is?

OMG, older does NOT equal smarter, or more knowledgeable, at least I linked to a manufacturer to back up my claims, and I've used rotella on every bike I've owned and never had a clutch issue