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Old 04-18-2005, 05:38 AM   #11
pdad13
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Default Re: Synthetic oil for older inlines ?

Any modern oil (with current API spec), mineral or synthetic, should work fine.



I love synthetics for their cold-start protection and you really don't have to change them as often. They usually contain an additive that adheres really well to engine parts that eliminates virtually all engine wear. But even the mineral-based oils are really, really good today.



By the way, don't waste money changing your oil every 2000 miles; you don't need to, especially with synthetics and semi-synthetics (which are just about as good as full synthetics). I mean, if it makes you feel better, go ahead. But all modern oils are designed to last much longer than that (even if Jiffy Lube tells you to do it every 3000 miles). With synthetics you can actually go into the tens of thousands of miles, no problem.



And no, to my knowlege, synthetics should not cause clutch slippage or excessive engine leaking or clunky shifting.
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Old 04-18-2005, 05:41 AM   #12
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Default Re: Synthetic oil for older inlines ?

I use Mobil 15/50 in my old BMW, but it has a separate gear box. From what I've read most modern automotive oils do not contain an adequate amount of ZDDP (a zinc compound) to properly protect the gears which tend to destroy the long chain molecules in the oil, and thereby reduce the oil's protective qualities. The Rottela oil that seruzawa mentioned is formulated for diesel engines, and contains an adequate amount of ZDDP. VWW
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Old 04-18-2005, 06:17 AM   #13
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Default Re: Synthetic oil for older inlines ?

My one Syntech experience was an immediate problem with notchy and difficult shifting when changing to SynTech on the GSX1100G. I drained it out and replaced it with Mobil1 after two days and the shifting problems went away immediately.



Another advantage I've noticed with Mobil1 is that my truck (has a 350 small block) doesn't eat as much oil. With mineral oils it burns about one quart btween changes (3000 miles). With Mobil1 it uses less than 1/2 quart every 3000 miles. Apparently the synthetic doesn't vaporize as easily when hot and get sucked up through the breather into the intake.
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Old 04-18-2005, 06:19 AM   #14
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Default Re: Synthetic oil for older inlines ?

I was having problems with notchy shifting on my old CB350, and a buddy of mine who's a diesel mechanic suggested a switch to Chevron Delo 15wt 40 (from Honda 10/40).



Worked great, shifts line new now. The motor seems to run cooler also.



Now I run that stuff in everything. It's pretty inexpensive too, about 4 bucks a gallon. If you're an oil-change fanatic like me, that's means a lot.



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Old 04-18-2005, 06:20 AM   #15
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Default Re: Synthetic oil for older inlines ?

If you rode Italian you'd be shopping for oil at your local deli.
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Old 04-18-2005, 06:22 AM   #16
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Default Re: Synthetic oil for older inlines ?

The bike doesn't have bad mileage but it's 10 yrs old, parts look like they are going to be hard to find if anything major goes wrong, I am not sure about the bike's entire maintenance history... etc. etc. I figure that it wouldn't hurt to baby it at least until I can tear it apart and see how itÂ’s held up so far.
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Old 04-18-2005, 07:00 AM   #17
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Default Re: Synthetic oil for older inlines ?

I've used Amsoil with good results. Go over to www.bobistheoilguy.com and you'll find more information than you probably need.
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Old 04-18-2005, 07:06 AM   #18
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Default Re: Synthetic oil for older inlines ?

Sorry to burt your bubble (and mine) Mobil1 15-50 (Red cap) is discontinued. Buy all that you can find.
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Old 04-18-2005, 07:09 AM   #19
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Default Re: Synthetic oil for older inlines ?

Mobil 15W 50 In everything I own and will own.
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Old 04-18-2005, 07:17 AM   #20
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Default Who the hell is burt?

Just went to Mobil's site and they are still selling it and didn't see anything about them not selling it in the future.
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