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Old 06-01-2008, 09:19 AM   #11
Kenneth_Moore
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Oh, you're going waaaay back to the good old days when the 2-strokes smelled like french fry cookers! The version I'm using is pure synthetic, not a drop of bean or dino oil in it. Like I said, it's working really well for me, and I can get it on sale at Cycle Gear for $8/liter, so I think I'll stick with it. Mini recommends the Castrol Syntec for my new cage, so I'll use the car version in that too. Can you believe it, Mini recommends oil changes at 10,000 miles!?!? Synthetics are good, but TEN THOUSAND MILES??? I think not!
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Old 06-01-2008, 10:11 AM   #12
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Quote:
Originally Posted by Kenneth_Moore View Post
Can you believe it, Mini recommends oil changes at 10,000 miles!?!? Synthetics are good, but TEN THOUSAND MILES??? I think not!
Oils have finally caught-up with the engine technology (and vicey-versey), and manufacturers are finally recognizing that. My Wife's '89 MR2 has oil-change intervals of 7500 miles - and that was BEFORE synthetics. The Bullitt Mustang we just bought also has a 7500-mile interval.

Mobil 1 has had for three or four years a 15,000-mile change-interval guarantee.

Likely, that 10K interval is quite conservative - you could probably go TWENTY THOUSAND and do no harm.

Better ring and cylinder metallurgy, better machine-tool practices, better combustion-dynamics, and more-efficient, less-waste-producing fuel-injection lead to less contamination of the oil.

Personally, I've been using sythetics (Mobil 1 exclusively) and extended-drain intervals for about 15 years or so. Not a single oil-related failure, across 7 autos and trucks, 8 motorcycles, and hundreds of thousands of miles.

You won't hurt anything in your engine by changing the oil sooner - except your pocketbook might sting. But, you'll contribute to increased demand for oil, and increase the "pool" of used-oil out there.

By all means: change it more-often. Be a Good Little Consumer. Increase the profits of Big Oil, and encourage all your friends to do so as well. Lord knows, Exxon and Shell need the money...............
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Old 06-01-2008, 10:37 AM   #13
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Huh. It's good to know that the oil-change intervals are conservative. Thanks!
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Old 06-01-2008, 12:15 PM   #14
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Well - think about it; more than ANYTHING ELSE, after the sale of a vehicle - WHAT is it that the manufacturer wants most?

Little or no Warranty claims is the correct answer. Claims cut-into future profits both directly(by forcing the mfgr to pay money for repairs/replacement), and indirectly (by hurting future sales by a bad reputation).

They are NOT going to recommend an oil-change interval, or viscosity of oil (for those that believe the mfgr is "full of it" when they call for a light oil such as 5w20 or 0w30), that will HARM the engine or reduce its lifespan purposefully; wouldn't you believe so?
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Old 06-01-2008, 12:38 PM   #15
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I agree with Airhawk, Ken. I've been using the Mobil 1 5w30 Extended Service oil in my Explorer for over 50k miles. I use the stock Ford filters and change it, the air filter and the oil every 15K. So far with over 110K on it it runs like a champ with the original spark plugs in it.

I use Mobil 1 15w50 car oil in the Dyna and either Mobil 1 MX4T 10w40 or Shell Rotella 15w40 diesel oil in the Bandit and change oil & filters every 5k. I think modern oil technology, modern metallurgy and manufacuring process's plus unleaded fuel keep engines and oils so much cleaner that short oil change intervals are a total waste of money and resourses.
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Old 06-02-2008, 11:02 AM   #16
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I've had best luck with the Sprocket Specialists sprockets with the hardened option. If you were referring to sprocket size, that's a matter of personal taste. Many people find the stock gearing is too tall, which would require using a larger rear sprocket or a smaller front sprocket ( the rear sprocket can be changed in smaller increments). This will result in a bike that accelerates a little harder, but runs higher rpms than previous at a given gear and speed.
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