SOHC.co.uk Forums > CB750
20/50
Mr_Sheene:
I usually use Morrison Lubricants (Not the Supermarket). Their website recommends:
1st Choice Race 4 TT 10W-40 - Part No. FTT.
2nd Choice Race Sport 4 - Part No. SSF.
I usually buy mine in advance at motorcycle shows and autojumbles like Kempton Park but they do sell their oil on-line and have a technical desk if you have any questions.
Moorey:
--- Quote from: Trigger on December 18, 2019, 09:37:00 AM ---All oils have changed over the years. Haven't seen anyone since I was a kid lighting a fire under the tank on a truck :o
--- End quote ---
;D ;D ;D That used to be every winter at 6AM on the pit stack to get the graders and dozers running for the day.
StevieWonder:
I read that mineral oil is best to 'run in' an engine after rebuild. So since mine was rebuilt, it's been running on 'gamma 10W40 mineral motorcycle oil' by ROCK OIL.
philward:
I use 10/40 now but can't comment on what affect it has on my engines as the bike is used in good conditions and engine totally rebuilt - so I refer back to when I used bikes in all weathers all year round and I used the likes of Duckhams 20/50 on all my Fours (Honda SOHC, ZI and Suzuki 1000's) over 150,000 plus and never had one mechanical issue (can't even remember changing clutch plates - but that might be my memory).
Point is, in my opinion, its about changing with quality oil and filters at the stated service intervals rather than the small differences in grades - and warming bike properly before ragging it.
Just my view
davefirestorm:
Not going to use it through winter so will change oil/filter now put last of my 10/40 in my Superdream I’m off to Newark show January so hope to get some 10/40 there.Thanks for all opinions on subject :D
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