Any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring. Car oils use different additives. Do not use any oil that says Energy Conserving on the label . It will shorten the life of your wet clutch and transmission gears. If you use Synthetic oils, they will help your bike run cooler and shift easier.Suzuki sells a fairly inexpensive full synthetic motor oil ($7 to $8).You will need 4 quarts of oil, an oil filter,a drain bolt washer, and anoil filter wrench. Pour in 3 plus quarts, whatever it takes to hit the high mark on the dipstick or viewing window . Run the engine to fill the dry filter. Recheck the oil level and top off to the high mark. You will use between 3 and 4 quarts depending on how much is left in the motor after you drain the old oil. You can reuse the aluminum crush washer if it is not out of shape (looks flat like a normal washer)but keep a spare on hand in case the bolt was overtightened on a previous oil change and the washer is contorted out of shape. Remember to only tighten the oil filter and drain bolt enough so they seal. Do not over tighten or you will have problems next oil change.
SOURCE: WHen changing oil on a 2007 GSXR 750, how much Oil
3 quarts does the trick with mine. just remember to use a good quality oil and filter.
SOURCE: Can a 1989 gsxr 750 use car oil fiter..? If yes ,
There may be an oil filter for an automobile that would fit. What you need to be concerned about is the pressure relief valve in the filter. If the auto filter has a valve that opens at a lower pressure than the cycle filter you may not be filtering your oil at all. Use the correct filter for your motorcycle. You can probably order the correct Fram oil filter from your local auto store or purchase the correct Suzuki filter from your local dealer (If it is far away order two). Be sure to use only JASO MA certified motorcycle oil. 10w-40 for cold climate or 20w-50 for warm climate/touring. Automobile oil does not have the right additives and will shorten the life of the wet clutch and transmission gears. Synthetic oil will help the bike run cooler and shift easier. Suzuki sells a very good , inexpensive full synthetic oil.
SOURCE: My 2001 suzuki gsxr 750 won't downshift all of a
Your shifter cam bolt has backed out, this is a common problem on earlier GSXR's. Happened twice on my 2000, both times during race weekends.
Stop riding the bike and shifting at all and do the following repair:
Remove clutch cover - you'll drain some oil so make sure you have a drip pan underneath
Remove the 5 the clutch housing plate bolts - careful as they have pretty stiff springs behind them providing torsion
Remove all the clutch plates - make sure you keep the same order and re-install the same way; matter of fact if you have never replaced your clutch plates, do it along with this repair.
Once the clutch case is basically empty, you will see at the lower left a small assembly that looks a bit like a tuning fork, at the end of the shifter shaft. There is also a cam there with rounded cogs. There is a 8mm or 10 mm hex head bolt that holds this cam, and I'm sure it has backed out and is causing the cam and shifter to not engage the gears properly.
Remove the cam bolt. Spray some compressed air or even a light spray of brake cleaner in the threaded area where the bolt you just removed is. Make sure the threads are clean and dry.
Place the cam bolt and assembly back in its position, and take some RED loctite to the shifter cam bolt threads. Make sure to torque the bolt to specifications, I think it's 24 or 28 nm.
Let the bolt set for 24-8 hours, then reassemble the clutch and replace the clutch cover gasket. Top off the oil and go riding.
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