[spinsheet]

I just bought a 1980 GL1100 from someone that bought it from someone else about 8 months ago. As such, neither he nor I know what kind of oil is in it. Can I, or even should I, go with a synthetic oil? I would like to change the oil as soon as possible as I have no idea how old this oil is.

What weight oil should I use in my 1980 GL1100? I don't have an owners manual so I'm really not sure. I've not had a bike in about 15 years and back then I always used Castrol 10w40 automotive oil but I now understand that that is not the best oil for a bike as they have differing needs.

What should I be looking for?

Thanks!

 

[Two Wheel Wing]

You could use Honda dino oil or any other oil that is labeled for m/c usage. Here is a link to oil info that may be helpful.

http://www.motorcycleanchor.com/motorcycle/how_to/mc_oil.html

 

[trike lady]

I use Honda GN4 in my 1500

 

[TKM]

Spinsheet
your bike has a wet clutch --it is advised you use a oil, which does not contain friction modifiers
I use Rotella 15-40 in mine

 

[detdrbuzzard]

castrol t4 m/c oil 10w 40

 

[lgsparks1]

I use Rotella 15-40 in My 1980 Goldwing GL1100 amd my 1999 Victory V92C. Works great in both. You can download a manual for free at this link -
http://www.goldwingdocs.com/Docs/Honda Goldwing GL1100 1980 to 1983 Service Manual-2D0AC.pdf

 

[mrshimm]

I also run the Rotella 15-40 in my 81 1100 I.
Haven't had a problem with it..
If you do a search here. You will find a load of reply's..LOL..
Steve

 

[Amsoil Dealer Group]

In answer to the OP.

You can use any oil, Petroleum or Synthetic, that meets the proper Specs which will be an API SG or SG/SH. A higher API such as SH or higher but Must then carry the JASO MA or MA2 Rating.

If you find a manual for that year, it most likely will say an SE oil. Forget trying to find that, SG and SH are Obsolete too but frequently used for M/C applications.

Use of a Premium M/C Specific oil is in your best interest. take a look at the M/C oil Tests in our Sig. Pick one of the top 3 finishers and you will be assured of a Great oil.

Ultimately, it is your bike and you can use whatever oil and filter you choose. But ask yourseld if it is it worth a few pennies to take a chance that you may have to replace the clutch?

For a filter, I would recommend a WIX 24940 or the OE Honda.

Oil is the Lifeblood of your engine. The oil filter, is the Kidney that keeps it clean.

The Best isn’t cheap
Cheap isn’t The Best

Bob