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Standard recommendations for Breva 750

Printed From: guzziriders.org - moto guzzi forum
Category: Technical
Forum Name: Oil
Forum Description: Where members can agonise over the right oil to use in their Guzzi.
URL: http://www.guzziriders.org/forum_posts.asp?TID=9333
Printed Date: 15 Dec 2018 at 13:31
Software Version: Web Wiz Forums 12.00 - http://www.webwizforums.com


Topic: Standard recommendations for Breva 750
Posted By: Bugsy
Subject: Standard recommendations for Breva 750
Date Posted: 11 Oct 2018 at 15:50
Well I have to ask don't I? New (to me) bike and all that. 2007 btw and standard.

I have read many oil threads and perused supplier sites, my bike's owner's manual (5W40 for the engine? Really?) and other forums. As I understand it:

Engine 10W60, for example Motul 7100 (API SG up to SL). Can't see the need for a bike specific oil though.

Gearbox GL5 80W90, for example Motul HD 80W90 mineral

Bevel ("transmission") GL5 85W140, for example Eni Rotra MG 85W140 (which I already have)

Contention for me is Molyslip G - to add it or not. It seems it is not necessary when using GL5 though many say it won't do any harm etc. I am not sure if it will prevent the EP additives in GL5 doing what they should, namely, coating the gears in a "sacrificial" layer so the metal isn't worn away.

Any thoughts welcome


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Ron

Pottering round the Durham Dales



Replies:
Posted By: Brian UK
Date Posted: 11 Oct 2018 at 16:10
I think they revised the engine oil rating at some point. Though 5W40 does seem a bit thin. Any quality 10W60 will be fine, no need to agonise over the manufacturer having the best write up in some rag.

They used to specify Molyslip in the early days but modern gearbox oils have improved a lot since then, so they now just specify GL5.

Many Guzzi owners do, of course, still live in those early days, and old habits etc. etc.


-------------
Brian.

Better 5 minutes late in this world than years early in the next.


Posted By: Dave P.
Date Posted: 11 Oct 2018 at 16:19
Many Guzzi owners do, of course, still live in those early days, and old habits etc. etc.
[/QUOTE]


Really Brian, whatever do you mean ???   

-------------
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.


Posted By: red leader one
Date Posted: 11 Oct 2018 at 18:05
And sitting in the shed farting.


Posted By: Jerry atric
Date Posted: 11 Oct 2018 at 22:24
etcetera...


Posted By: nab301
Date Posted: 11 Oct 2018 at 23:32
The handbook I have marked Breva V750ie recommends  10w60  which is what I use in my '04 example but if I look  at an oil manufacturers oil advisor  it lists  two models  , V750ie   (10w 60) and a  V 750 (5w 40 ), now i'm confusedConfused

http://www.eurol.com/en/37-products/54-oil-advisor.html" rel="nofollow - http://www.eurol.com/en/37-products/54-oil-advisor.html


-------------
Nigel
Keep smiling , it makes people wonder what you've been up to!
'04 Breva 750, '99 Bmw R1100S, '06 Triumph Bonneville '05 CBF 250, '03Bullet 65 500, '93 MZ301 Saxon fun


Posted By: Bugsy
Date Posted: 12 Oct 2018 at 10:42
Using the same oil advisor Nigel, choosing 2003 to 2012 B750 I too get 10w60 and yet my handbook lists 5w40 which I would think too thin unless I lived well north of the UK. The gear oils listed include some high spec synthetic stuff but I think Barry has it right - GL5 is the key and no doubt regular changes too.

My "shed" is an integral garage, so I have to be very careful what I get up to in there...


-------------
Ron

Pottering round the Durham Dales


Posted By: Petros GR
Date Posted: 25 Oct 2018 at 14:08
http://www.thisoldtractor.com/mg_manuals/moto_guzzi_technical_note_010-2006.pdf" rel="nofollow - http://www.thisoldtractor.com/mg_manuals/moto_guzzi_technical_note_010-2006.pdf

Some manuals had errors, some didn't



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