4 replies [Last post]
Guaire
Guaire's picture
 Offline
Arlington, VA
Joined: 08/16/2016
Posts: 22

It's a 1983 RT80RT. Eventually I'll do an oil change. I'm Arlington, VA climate-wise. What are my options with oil weights and type?

Regards,
Bill

__________________

1983 R80RT, 2014 Royal Enfield Continental GT, 1986 Honda VF500F

schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6327
Bill - This will probably

Bill -

This will probably give you a headache, but worth reading and knowing about:

http://bmwmotorcycletech.info/viscosity.htm

IMO, you should run a 20w50 weight oil that carries an API rating of SG/SH. The SG/SH ensures a proper chemical makeup that is beneficial to flat tappet engines.

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

Guaire
Guaire's picture
 Offline
Arlington, VA
Joined: 08/16/2016
Posts: 22
Still Reading

Thanks, Kurt. My head didn't explode...yet.
I'll use that 15w50. I'm going to spend some time studying that link. The author even explains some things about cars too.

__________________

1983 R80RT, 2014 Royal Enfield Continental GT, 1986 Honda VF500F

schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6327
You're going to want to pay

You're going to want to pay attention to the "$2000 o-ring" situation. Improper placement of parts during the oil change can result in engine damage. Snowbum talks about it. So does Anton on a couple of sites:

http://www.largiader.com/tech/filters/

http://www.largiader.com/tech/filters/canister.html

You want to make sure you understand what the canister depth is so you can use the right stack up of parts.

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6327
I just did an oil change on

I just did an oil change on my /7 today and it made me thing of something else. Once you've completed the filter change and filled with oil, you should spin the engine so that you can pressurize the oil passage ways and move oil into the filter housing. I did this by dropping each float bowl and then cranking the engine until the oil pressure light went out. You could also remove the spark plug caps but stick some plugs into the caps and tie the plug threads to the engine fins to ensure they're grounded during the cranking process. I find the float bowl approach is easier and lets me inspect for any debris or water in the bottom of the bowl. Then carefully reinstall the bowls.

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.