Oil question cali 14 content

[lucian]

Manual specs gl4 80/90 for "trans"   and
                     gl5 85/90 for gear box

Now I assume they mean rear bevel gears for line 1 and six speed tranny for line 2

I have read that some use synth 80/90 for both,  my dealer uses Silkoline 80/90 for both which is mineral  gl5

now my question,  I have 5 gallons of Valvoline 75/90 sythpower full synthetic I use for equipment differentials and manual tranny's
It say's it's approved for all gl4 and 5 applications .  Will this stuff be ok for the Cali 14 bevel and trans?  It also say's it is compatible with non synthetic oils. Been searching the threads for two days without getting too far.

thanks in advance   Dave

[ITSec]

Manual specs gl4 80/90 for "trans"   and
                     gl5 85/90 for gear box

Now I assume they mean rear bevel gears for line 1 and six speed tranny for line 2

I have read that some use synth 80/90 for both,  my dealer uses Silkoline 80/90 for both which is mineral  gl5

now my question,  I have 5 gallons of Valvoline 75/90 sythpower full synthetic I use for equipment differentials and manual tranny's
It say's it's approved for all gl4 and 5 applications .  Will this stuff be ok for the Cali 14 bevel and trans?  It also say's it is compatible with non synthetic oils. Been searching the threads for two days without getting too far.

thanks in advance   Dave

Your translation of the terms transmission and gearbox are correct - what North Americans call a transmission is a gearbox for a Guzzi translator; a final drive is oddly (at least to us) often called a transmission. Makes me wonder what they'd call a differential.

I own a Norge, but the specs are similar for these lubes. According to the specs, the requirement is for synthetic, not mineral - so I would make a different choice from the one your dealer makes.

I have used a full synthetic 75w90 GL4/GL5 oil from Mobil1 in both areas for as long as I have owned my bike - some 125,000 miles so far. I see no reason why the Valvoline equivalent wouldn't produce equally good results. One thing you may discover is that shift feel is a bit different with the change in oils; if you don't like it, you can always switch to something else.

[lucian]

Thanks ITsec   have just finished reading this   http://www.lastgreatroadtrip.com/wp-content/uploads/2010/11/gear-oil-comparison.pdf

Makes me want to go get some Aimsoil, but I'm cheap and will probably use what I have on hand,  looks like the Aimsoil is the cats meow.  An interesting read if you like lube stories.   

[guzzisteve]

No worries on the rear for 31K mi, so they say. 

I still have 2 1/2 gal of FS Power Fluid that I add to automatic trans, power steering, transfer cases.  Made for hydostatic trans on the tractor and hydraulic system.

Oil thread police will be here soon.

[Kiwi Dave]

I used Redline Shockproof Heavy for both ends (just like all my other Guzzis).

[Arizona Wayne]

My `04 750 Breva recommended 80W-90 GL5 oil for the tranny(gearbox).  It was fine unless the ambient temp was 40F and the bike was cold.  Then the tranny didn't want to shift even into 1st or 2nd for awhile until the oil warmed up.  So I put in some Valvoline semi-synthetic 75W-90 and from then on the tranny worked fine no matter the ambient temp.