Question about 1984 Yamaha FJ 1100
The original manual states :-
Engine oil for XS1100
not below 5 Celsius (40F) SAE 20W/40 SE
not above 15 Celsius (60F) SAE 10W/30 SE
You will be lucky to find SE spec these days though!!
Please mark this as very helpful (if it has been!!)
Posted on Apr 27, 2010
General consensus among users at the Yamaha XS1100 forum has been to use a 20w50 with the spec circle blank (i.e. no friction modifiers added that can make an old wet clutch slip). Castrol 20W50 and WalMart's Supertech 20w50 both meet this requirement. Going to a 50w vs 40w at the heavier end seems to quiet the valvetrain noise and is a bit more resistant to pushing past the old oil rings and being burned up.
Posted on Dec 17, 2014
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Posted on Jan 02, 2017
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