Engine oil selection


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Oldflyer
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Engine oil selection

Postby Oldflyer » Tue Mar 18, 2014 12:54 pm



In the service manual (Clymer) that I have for the1984 GL1200, the oil specified is either 10W-40 or 20W-50 for the temp range that my bike will be operated. I am planning to use Amsoil Synthetic Motorcycle Oil. Any thoughts and/or comments? I am leaning toward the 20W-50.

Oldflier



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erikwillke
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Re: Engine oil selection

Postby erikwillke » Tue Mar 18, 2014 4:00 pm

I've always been told not to use synthetic on older engines because the molecules are smaller than dinosaur oil and seeps past older seals faster than regular oil.
Finally bought the same bike that brought me so much joy as a kid from the backseat.

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Oldflyer
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Re: Engine oil selection

Postby Oldflyer » Tue Mar 18, 2014 7:42 pm

With all due respect, you are certainly entitled to your opinions, but that business about synthetic oil causing oil leaks through seals and gaskets is an "old wives tale." If a seal or a gasket is prone to leak, it is going to leak with or without synthetic oil. Solution to that is to replace the leaking seal or gasket. :D

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RoadRogue
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Re: Engine oil selection

Postby RoadRogue » Wed Mar 19, 2014 1:29 am

Oh boy, another oil thread......... Im gonna scream!!!!!!! 8-)
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erikwillke
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Re: Engine oil selection

Postby erikwillke » Wed Mar 19, 2014 7:00 am

If you didn't want a comment about synthetic oil then you shouldn't have asked for "any thoughts or comments" in a post specifically about synthetic oil.
Finally bought the same bike that brought me so much joy as a kid from the backseat.

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Oldflyer
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Re: Engine oil selection

Postby Oldflyer » Wed Mar 19, 2014 7:11 am

Erik, please don't misunderstand me. I did ask for comments and I value yours as well. I am sorry if I offended you and I am almost sorry that I didn't find comments and discussion on the use of synthetic oil before I wrote my post, however, I was really asking the question as to whether to choose 10W-40 vs 20W-50. I happened to be reading the thread in the GL1000 section and stumbled onto the starter clutch squeal problem and in there, the synthetic oil subject was discussed well enough that my questions have been answered.

Oldflier (Bill)

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dingdong
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Re: Engine oil selection

Postby dingdong » Wed Mar 19, 2014 7:22 am

Good thing spring is on the way. ;) We seem to be getting grumpy with all this cold and snow this winter. :lol:
Tom

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erikwillke
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Re: Engine oil selection

Postby erikwillke » Wed Mar 19, 2014 8:19 am

Oldflyer,

I apologize for getting out of pocket. I misunderstood the nature of your original post. I agree with the comment about spring.

Cheers
Finally bought the same bike that brought me so much joy as a kid from the backseat.

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themainviking
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Re: Engine oil selection

Postby themainviking » Wed Mar 19, 2014 5:09 pm

Bill (oldflyer), now that all the feathers have flown and all the ruffled fur has been smoothed, I will jump right on in. It is not necessary to go to a 20W50 to get the protection that you are looking for. Amsoil designed 20W50 motorcycle oil more for aircooled Harley V-Twins than for liquid cooled engines. The 10W40 should do everything you want. I doubt that you can operate your bike in a hot enough climate to require the extra high temperature capabilities of 20W50. In fact, I cannot even use the 10W40 in the temperatures we have here most of the year without experiencing intermittent sprague clutch problems in my GL1800. I use only 10W30 and find that it operates exactly as I would wish.
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Oldflyer
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Re: Engine oil selection

Postby Oldflyer » Wed Mar 19, 2014 7:37 pm

Themainviking,

Thanks for your comment. Your suggestion is the conclusion that I came to earlier in the day. I do use the Amsoil 20W-50 in my Harley Low Rider. I also know that the thinner the oil that one can use, the better off because of better heat transfer with the thinner oil and the less drag on internal parts. All of this, of course, is provided that the oil of choice can stand any loads and heat requirements imposed on it. I agree perfectly.

I am excited about going to get my bike tomorrow and riding it home. This is the first Honda that I have owned since my 1963 Honda Super Hawk 305. We have come a long way since then and that was a good many bikes away. My long distance touring days are over, but I know that I will enjoy this GL1200 for some of the longer day rides and maybe an occasional overnight. For the moment, the Low Rider will still be in the picture.

Regard, Bill

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Re: Engine oil selection

Postby amsoilguy » Tue Mar 25, 2014 12:59 pm

Bill, I agree with Viking...the 10W-40 will be all you need...great choice.
Allan

'88 GL1500

timdiver,,64
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Re: Engine oil selection

Postby timdiver,,64 » Thu Mar 27, 2014 1:18 pm

Hi guys. Oil types are personal. Let my throw another at you. 15/40 Rotella. This is a high detergent diesel oil. The detergent will keep the starter engagement area nice and clean. Must be a great oil with high lubricity since its used on high pressure high mileage engines. Just something else to consider. PS...Am soil is a fantastic product.

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Oldflyer
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Re: Engine oil selection

Postby Oldflyer » Thu Mar 27, 2014 10:15 pm

Thanks to all for your comments. I do value your thoughts and recommendations.

Bill

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Happytrails
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Re: Engine oil selection

Postby Happytrails » Sun Mar 30, 2014 6:39 am

Going to give 10w-40 Delo 400 diesel oil a try this year.
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aloraptor
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Re: Engine oil selection

Postby aloraptor » Wed Apr 02, 2014 7:51 am

Happytrails wrote:Going to give 10w-40 Delo 400 diesel oil a try this year.


I use Mobil Delvac 1300 super 15W-40 Diesel oil in my bikes and it works great. Walmart carries it for around $13.00 a gallon. :D




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