I told the fellow at the auto parts store that I needed hypoid lubricant for the differential of my car. He showed me a plastic bottle of Castrol HYPOY C Gear Oil SAE 80W-90. He told me that this was the same as hypoid lubricant because hypo meant high pressure. I didn't try to tell him anything about hypoid gears because I was not sure I could explain it to him, as I was not positive that I knew enough to do so.
Now, I have some questions:
1. Can we assume that the HYPOY is in reference to hypoid?
2. What does the "C" mean?
3. It is stated on the bottle that it provides excellent performance in manual transmissions and differentials but with the hype about the need for different lubricants in old cars than in current cars, I am still not sure if this will be safe for my 1950 Champion?
I Googled the word hypoid and the following is one bit of information a fellow has written. Are his comments accurate?
Copied from his site:
> The book is telling me to use Non-Hypoid gear oil 80W or
>80W/90 on the manual transmission and GL-5 hypoid gear oil 90W on
>the rear axle.
A manual transmission won't usually contain hypoid gears, so it
doesn't need an EP oil. Rare exceptions are those transaxles where the
crownwheel and gearbox share the same lubricant. Although an EP oil is
more complex to manufacture, it has no disadvantages when used in
instances where the EP attribute isn't strictly required. Manual
steering boxes and other slow-moving oil-containing components are
often filled with 90 weight oil. It's usual to buy EP90 because that's
what the axle requires, then use the same oil for all other
components.
There's little practical difference between 80 & 90 weights. I fill
everything with EP80 and I've never had a problem.
There's an increasing trend amongst manufacturers to reduce the number
of different lubricant types required. My own gearbox (5 speed Range
Rover) runs on ATF, but 20W/50 engine oil or EP90 axle oil are equally
permissible.
--
Andy Dingley
Jimmie
Orange County, Indiana
1950 CHAMPION -ORANGE COUNTY, INDIANA
Now, I have some questions:
1. Can we assume that the HYPOY is in reference to hypoid?
2. What does the "C" mean?
3. It is stated on the bottle that it provides excellent performance in manual transmissions and differentials but with the hype about the need for different lubricants in old cars than in current cars, I am still not sure if this will be safe for my 1950 Champion?
I Googled the word hypoid and the following is one bit of information a fellow has written. Are his comments accurate?
Copied from his site:
> The book is telling me to use Non-Hypoid gear oil 80W or
>80W/90 on the manual transmission and GL-5 hypoid gear oil 90W on
>the rear axle.
A manual transmission won't usually contain hypoid gears, so it
doesn't need an EP oil. Rare exceptions are those transaxles where the
crownwheel and gearbox share the same lubricant. Although an EP oil is
more complex to manufacture, it has no disadvantages when used in
instances where the EP attribute isn't strictly required. Manual
steering boxes and other slow-moving oil-containing components are
often filled with 90 weight oil. It's usual to buy EP90 because that's
what the axle requires, then use the same oil for all other
components.
There's little practical difference between 80 & 90 weights. I fill
everything with EP80 and I've never had a problem.
There's an increasing trend amongst manufacturers to reduce the number
of different lubricant types required. My own gearbox (5 speed Range
Rover) runs on ATF, but 20W/50 engine oil or EP90 axle oil are equally
permissible.
--
Andy Dingley
Jimmie
Orange County, Indiana
1950 CHAMPION -ORANGE COUNTY, INDIANA
[}
][:0]
Comment