bugs
Well-Known Member
The gearbox label on my volvo D255F states "SAE 15W40 ONLY". Are there specific Transmission oils to 15W40 or can I use my Engine oil of the same grade?
Volvo Reverse Gear oil
- Thread starter bugs
- Start date
sailorman
Well-Known Member
15>40 is multigrade engine oil
RichardS
N/A
Why is it reverse gear oil rather than gear oil?
Do you have separare reverse and forward gearboxes?
Genuine question.
Richard
Do you have separare reverse and forward gearboxes?
Genuine question.
Richard
Tranona
Well-Known Member
Historic terminology. When gearboxes with reverse gears first came in they were referred to as "Reverse Gear" to indicate they had that feature. Clearly obsolete now, but such terms tend to hang around long after they had any practical relevance.
johnalison
Well-Known Member
I suspect that the Volvo gearbox accurately but unhelpfully calls itself a reverse gearbox.
Too late as usual.
Too late as usual.
bugs
Well-Known Member
sorry, no, the gearbox is just the reverse option. As opposed to saildrive and others.
I worded that poorly.
I worded that poorly.
VicS
Well-Known Member
Volvo call them reverse gears when describing gearboxes for shaft drives. as opposed to sail drives
in the case in point all the alternative transmissions, reverse gear boxes and sail drives, use 15W 40 oil except the HS25A reverse gear which uses ATF
RichardS
N/A
Even though saildrives also have a reverse gear? Very strange. You can tell I'm a Yanmar man.
"Yanman" perhaps!
Richard
bugs
Well-Known Member
VicS
Well-Known Member
Perhaps its been changed from ATF to 15W40 just as they changed the oils in the saildrives that used ATF to engine oil
Stick to what the label says, not the manual which is what i was quoting from.
Tranona
Well-Known Member
Even though saildrives also have a reverse gear? Very strange. You can tell I'm a Yanmar man.
"Yanman" perhaps!
Richard
Often happens when words are used as "labels" and the meaning departs from that in everyday use, or even from the dictionary definition!