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I just ordered some from Lubrication Specialists for $6.65 a QT. Now that it's been out for a while, does it perform as well as advertised? Amsoil's website says you can go twice the factory drain interval. That would mean leaving it in my 05' 6R for 15,000 miles. Sorry but I just am not buying into that hype. 7500 miles maybe. Anyway, what do some of you think of this oil?...esp regarding shifting, smoothness, engine temps.
 

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Actually the amsoil site says for street riding only to go twice the manufacturer recommended interval(or at one year whichever is sooner) if you are using it with an amsoil filter. It says if using any other brand filter to change your oil at the standard intervals.
 

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Tried reediting my original post but I waited too long...

I have not yet used amsoil myself. I ordered some yesterday though with an amsoil filter as well. I plan to have the oil analyzed at the manufacturer recommended change interval to see if it's still holding up well enough to wait till double for a change. I will post my results...probably about 4 months from now. ;)
 

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I've run amsoil fully syn (10-40) in two different bikes over the last 3 years and change it ever 3-4k.... sometimes earlier due to trackdays....
 

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ah yes, interesting point as I am using an oil designed to last 3 to 4 times longer than manufacturer specified

Some oil is capable of it. The inherant problem is as oil gains contaminants it loses some of its lubricative qualities.

PM Lubes (in Australia) have a monitoring program whereby they monitor the contaminant level and effectiveness of the oil regularly. So even though it is designed to last 3 to 4 times longer, you MUST have it monitored, mainly for impurities but also signs the oil is breaking down.

My problem is this- regular monitoring can tell you if contaminant levels are too high, for example if your air filter is too blocked, or if there is an air leak past the air filter, or even if there is too much fuel in the oil from missing or running rich. The problem with a manufacturer specifying twice the distance on the same oil without monitoring it is that if you have a high silica (dust) level, your motor will die a horrible, premature death. The idea is to ensure contaminant levels are low enough as to not cause wear while the oil is in there for longer.

PM's oil will do up to 40 000 kilometres (lotsa miles) but will not reccommend it unless the free monitoring is carried out.
 

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Very good point cas...which I think is teh reason that amsoil recommends changing at standard change intervals when using other manufacturer oil filters. The have a chart that outlines recoommended change intervals for different applications. For example; recommendation for on-road only motorcycle use they recommend changing amsoil/filters at double the interval or one year, while off-road motorcycle use they recommend changes at teh standard interval, and track use they reccommend changes "at owner discretion". Of course they also reccomend periodic oil analysis to ensure that you are using the best oil for the application and that you are changing it at the ideal intervals.

I have been doing research trying to find the "best" motorcycle engine oil so I could put together a FAQ or KB article for the motorcycle forums I frequent. Before I put in the amsoilI bought I am going to have my current oil tested as a baseline for comparison. I am then going to have the amsoil tested at the kawasaki recommended change interval, and if it's holding up well enough will see how it holds up waiting longer to change it. I am also trying to gather oil analysis data from other brands of oils to compile for comparison. If anyone else has had oil analysis done, or is going to in the near future please send me the results along with year/make/model of motorcycle, mileage on motorcycle at change, mileage on oil at time of analysis, and brand/weight of oil tested.
 
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