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Mechanics 101 Can't get it to run right? Find a trick to add HP?
From the first oil change to completely rebuilding the engine,
this is the place to talk about the heart of the beast!


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Old 05-21-2006, 04:57 PM   #1
efozie
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Default Oil advice for Katana 750

Does anyone have an opinion on what is a good oil to run in the Katana? I've seen some articles but I prefer someone who has used the oil on a Katana...if there is any difference...
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Old 05-21-2006, 10:46 PM   #2
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i'm running castrol gps semi-synthetic. 10w-40 in the winter, 20w-50 in the summer. it made such a difference in the performance of the bike and the clutch over whatever the guy before me used.
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Old 05-21-2006, 10:53 PM   #3
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There are many types of oil and you'll get a different response from everyone. However, as a general guideline, I recommend the following oil characteristics:

- JASO-MA Certified and API SG
- A 10W40 rating
- Synthetic or Semi-synthetic if you ride hard

Other than that, just change the oil at the required intervals and you'll be fine. Personally, I use Castrol Grand Prix but you can use other oils such as...

- Mobil 1 MX4T
- AMSOil AMF 10W40
- Castrol GPS
- Castrol Act-evo
- Motul 300V Sport
- Valvoline 4-Stroke

I hope this helps.
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Old 05-22-2006, 03:57 AM   #4
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I feel like there's an echo in here... (good job, Kat-a-tonic!)

I too run the Castrol GPS 10w40 in cooler weather and 20w50 through the peak of the summer (mixing the two in the spring & fall as the Florida heat dictates). Oh, and ParadoxMD, it's a full synthetic these days (has been for a couple years now).

-----------
A cool read:
Castrol tested their newly revised R4 race oil for 100 hours on a brand new CBR600RR (12,600 miles before the first oil change)..

The latest issue of Bike [UK] has a nice write up on their testing robot, which automatically learns any bike when attached to it (including the shift pattern, clutch points, etc).

The UK will be offering R4 variants in other weights than 5w40. I don't know if the US will also be offering the change, but I do have a request in to find out.

Cheers,
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Old 05-22-2006, 03:28 PM   #5
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Quote:
Originally Posted by The CyberPoet
Oh, and ParadoxMD, it's a full synthetic these days (has been for a couple years now).
even better.
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Old 05-24-2006, 07:27 PM   #6
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I'm runnin Amsoil full synthetic 10-40. I haven't noticed any changes in performance from the non synthetic 10-40.
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Old 05-24-2006, 08:03 PM   #7
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Quote:
Originally Posted by Gripp
I'm runnin Amsoil full synthetic 10-40. I haven't noticed any changes in performance from the non synthetic 10-40.
If you want a performance benefit, try running Castrol R4 just once... you'll feel the difference in the seat of your pants...

Cheers,
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Old 05-25-2006, 08:00 AM   #8
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I found a huge difference in performance after switching from Castrol Actevo to Mobil 1 MX4T.

I now find myself looking at the site glass and am amazed that the oil still looks light brown (the Actevo got pretty dark after about 200 miles or so).
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Old 05-25-2006, 12:48 PM   #9
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Quote:
Originally Posted by FloridaKat
I found a huge difference in performance after switching from Castrol Actevo to Mobil 1 MX4T.

I now find myself looking at the site glass and am amazed that the oil still looks light brown (the Actevo got pretty dark after about 200 miles or so).
I suspect this may also have to do with the fact that we left the drain open for a long, long time (hours?) and drained the cooler as well...

Cheers,
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Old 05-25-2006, 01:47 PM   #10
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Quote:
Originally Posted by The CyberPoet
Quote:
Originally Posted by FloridaKat
I found a huge difference in performance after switching from Castrol Actevo to Mobil 1 MX4T.

I now find myself looking at the site glass and am amazed that the oil still looks light brown (the Actevo got pretty dark after about 200 miles or so).
I suspect this may also have to do with the fact that we left the drain open for a long, long time (hours?) and drained the cooler as well...

Cheers,
=-= The CyberPoet
I changed the oil the day after we did the valve adjustment, but agree the cooler was probably laced with dirty oil. I did leave the drain open for about 1/2 hour. The next time, I'm definitely going to look at cleaning the metal shavings and screen in the oil pan (thanks for the great advice!).

The biggest difference I've noticed with the oil change is with shifting; I'm finding it easier to shift in all gears, especially from 1st to 2nd. Wierd huh?
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