API CD Oil - is this it?

A Rizla paper :o

Yes, that's about it. The TBN of CC is 3 and of the CD it is 4. Probably very little other difference. A current thread about Bukh engines mentions the DV10 used in lifeboats. The oil for that was CA with a TBN of 1. Not sure if that is still used, or even made, but it does demonstrate that these low TBN oils are much of a muchness.
 
CG-4
CF-4
CF-2
Obsolete
CF
Obsolete
CE Obsolete
CD-II Obsolete
CD
CC Obsolete
Obsolete
Current
Current
Current
Current
CB
CA
Introduced in 2002. For high-speed, four-stroke
engines designed to meet 2004 exhaust
emission standards implemented in 2002. CI-4
oils are formulated to sustain engine durability
where exhaust gas recirculation (EGR) is used
and are intended for use with diesel fuels
ranging in sulfur content up to 0.5% weight.
Can be used in place of CD, CE, CF-4, CG-4,
and CH-4 oils. Some CI-4 oils may also qualify
for the CI-4 PLUS designation.
Introduced in 1998. For high-speed, four-stroke
engines designed to meet 1998 exhaust
emission standards. CH-4 oils are specifically
compounded for use with diesel fuels ranging
in sulfur content up to 0.5% weight. Can be
used in place of CD, CE, CF-4, and CG-4 oils.
Introduced in 1995. For severe duty, high-speed,
four-stroke engines using fuel with less than
0.5% weight sulfur. CG-4 oils are required for
engines meeting 1994 emission standards.
Can be used in place of CD, CE, and CF-4 oils.
Introduced in 1990. For high-speed, four-stroke,
naturally aspirated and turbocharged engines.
Can be used in place of CD and CE oils.
Introduced in 1994. For severe duty, two-strokecycle
engines. Can be used in place of CD-II
oils.
Introduced in 1994. For off-road, indirectinjected
and other diesel engines including
those using fuel with over 0.5% weight sulfur.
Can be used in place of CD oils.
Introduced in 1985. For high-speed, four-stroke,
naturally aspirated and turbocharged engines.
Can be used in place of CC and CD oils.
Introduced in 1985. For two-stroke cycle
engines.
Introduced in 1955. For certain naturally
aspirated and turbocharged engines.
CAUTION—Not suitable for use in diesel-powered
engines built after 1990.
 

[TD="align: center"]
CJ-4CurrentIntroduced in 2006. For high-speed, four-stroke engines designed to meet 2007 model year on-highway exhaust emission standards. CJ-4 oils are compounded for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust after-treatment system durability and/or oil drain interval. CJ-4 oils are effective at sustaining emission control system durability where particulate filters and other advanced after-treatment systems are used. Optimum protection is provided for control of catalyst poisoning, particulate filter blocking, engine wear, piston deposits, low- and high-temperature stability, soot handling properties, oxidative thickening, foaming, and viscosity loss due to shear. API CJ-4 oils exceed the performance criteria of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4 and CF-4 and can effectively lubricate engines calling for those API Service Categories. When using CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval.
CI-4CurrentIntroduced in 2002. For high-speed, four-stroke engines designed to meet 2004 exhaust emission standards implemented in 2002. CI-4 oils are formulated to sustain engine durability where exhaust gas recirculation (EGR) is used and are intended for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, CG-4, and CH-4 oils. Some CI-4 oils may also qualify for the CI-4 PLUS designation.
CH-4CurrentIntroduced in 1998. For high-speed, four-stroke engines designed to meet 1998 exhaust emission standards. CH-4 oils are specifically compounded for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, and CG-4 oils.
CG-4CurrentIntroduced in 1995. For severe duty, high-speed, four-stroke engines using fuel with less than 0.5% weight sulfur. CG-4 oils are required for engines meeting 1994 emission standards. Can be used in place of CD, CE, and CF-4 oils.
CF-4CurrentIntroduced in 1990. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CD and CE oils.
CF-2CurrentIntroduced in 1994. For severe duty, two-stroke-cycle engines. Can be used in place of CD-II oils.
CFCurrentIntroduced in 1994. For off-road, indirect-injected and other diesel engines including those using fuel with over 0.5% weight sulfur. Can be used in place of CD oils.
CEObsoleteIntroduced in 1985. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CC and CD oils.
CD-IIObsoleteIntroduced in 1985. For two-stroke cycle engines.
CDObsoleteIntroduced in 1955. For certain naturally aspirated and turbocharged engines.
CCObsoleteCAUTION: Not suitable for use in diesel-powered engines built after 1990.
CBObsoleteCAUTION: Not suitable for use in diesel-powered engines built after 1961.
CAObsoleteCAUTION: Not suitable for use in diesel-powered engines built after 1959.
[/TD]
[TD="align: center"][/TD]
 
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[SIZE=-1]Introduced September 5, 2002. For high-speed, four-stroke engines designed to meet 2004 exhaust emission standards implemented in 2002. CI-4 oils are formulated to sustain engine durability where exhaust gas recirculation (EGR) is used and are intended for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, CG-4, and CH-4 oils.[/SIZE]
[SIZE=-1]Introduced in 1998. For high-speed, four-stroke engines designed to meet 1998 exhaust emission standards. CH-4 oils are specifically compounded for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, and CG-4 oils.[/SIZE]
[SIZE=-1]Introduced in 1995. For severe duty, high speed, four-stroke engines using fuel with less than 0.5% weight sulfur. CG-4 oils are required for engines meeting 1994 emission standards. Can be used in place of CD, CE, and CF-4 oils.[/SIZE]
[SIZE=-1]Introduced in 1990. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CD and CE oils.[/SIZE]
[SIZE=-1]Introduced in 1994. For severe duty, two-stroke cycle engines. Can be used in place of CD-II oils.[/SIZE]
[SIZE=-1]Introduced in 1994. For off-road, indirect injected and other diesel engines including those using fuel with over 0.5% weight sulfur. Can be used in place of CD oils.[/SIZE]
[SIZE=-1]Introduced in 1987. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CC and CD oils.[/SIZE]
[SIZE=-1]Introduced in 1987. For two-stroke-cycle engines.[/SIZE]
[SIZE=-1]Introduced in 1955. For certain naturally aspirated and turbocharged engines.[/SIZE]
[SIZE=-1]For engines introduced in 1961.[/SIZE]
[SIZE=-1]For moderate duty engines from 1949 to 1960.[/SIZE]
[SIZE=-1]For light duty engines (1940's and 1950's).[/SIZE]

[TD="align: center"][SIZE=+1] CI-4 [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Current [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CH-4 [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Current [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CG-4 [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Current [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CF-4 [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Current [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CF-2 [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Current [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CF [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Current [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CE [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Obsolete [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CD-II [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Obsolete [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CD [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Obsolete [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CC [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Obsolete [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CB [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Obsolete [/SIZE][/TD]

[TD="align: center"][SIZE=+1] CA [/SIZE][/TD]
[TD="align: center"][SIZE=+1] Obsolete [/SIZE][/TD]

;)
 
The VP manual and Vyv Cox web site both recommend CD oil for these engines if you can find it.

I think it's worth bearing in mind that the 2000-series VP engines were introduced in 1983, and so the manual would probably have been written in 1982. At that time, CD was the best quality oil available. Volvo Penta are, of course, keen to sell their own-brand oil, which at that time was CD rated.

When the next generation of VP engines, the 2010A/2020A/2030A/2040A, was introduced in 1993, the oil specified in the manual was again CD, probably because that was still the rating of the VP own-brand oil. Fast forward to the introduction of the "D" versions of these engines in 2000, and the manual then was specifying CH-4 oil. Same basic engine, same bearings, same seals, but a higher oil spec, because oil grades had progressed and better engine protection was available.

So, I wouldn't worry too much about trying to buy old-spec CD oil just because that's what it says in the manual. Times change, oil gets better, why not have the benefit of better engine protection from a better grade of oil?
 

We have had this discussion so many times that I really cannot be bothered to continue it. Just answer the question I asked last time, or maybe the time before that. If API CI-4 is a perfect substitute for CD, CE, CF-4, CG-4, and CH-4 oils, why do the oil companies still make them? They would be delighted to only make one grade that suited every engine. It happens with most commodities, e.g once NEW DAZ has been introduced do you suppose they still make OLD DAZ?
 
So, I wouldn't worry too much about trying to buy old-spec CD oil just because that's what it says in the manual. Times change, oil gets better, why not have the benefit of better engine protection from a better grade of oil?


Vyv Cox's website explains why the later higher spec oils may not be ideal for older yacht engines
 
Vyv Cox's website explains why the later higher spec oils may not be ideal for older yacht engines

Yes, I understand that Vyv has certain views on the subject. However, the point I made about VP raising the recommended oil spec for their 2010/20/30/40 engines during the production run is valid. If the more modern oil grades are as bad for yacht engines as Vyv thinks, why did VP upgrade their recommendation?
 
So, I wouldn't worry too much about trying to buy old-spec CD oil just because that's what it says in the manual. Times change, oil gets better, why not have the benefit of better engine protection from a better grade of oil?

Which is the opposite of what the articles I was referring to suggest!

If the more modern oil grades are as bad for yacht engines as Vyv thinks, why did VP upgrade their recommendation?

Because they only supply the latest grades in their branded oil.
 
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We have had this discussion so many times that I really cannot be bothered to continue it. Just answer the question I asked last time, or maybe the time before that. If API CI-4 is a perfect substitute for CD, CE, CF-4, CG-4, and CH-4 oils, why do the oil companies still make them?

To be fair, though, CD is now almost unobtainable, which suggest that most oil companies do think that a perfect substitute is available. That's not to doubt a word on your website, of course, though I confess I still haven't a clue whether anything other than CD will ideally suit my 1GM10.
 
Which is the opposite of what the articles I was referring to suggest!

The only article you've referred to is Vyv Cox's website, and he's known to hold views which aren't shared by others.


Because they only supply the latest grades in their branded oil.

So you're suggesting that Volvo Penta would recommend an oil which would damage their engines? I don't think so.
 
The only article you've referred to is Vyv Cox's website, and he's known to hold views which aren't shared by others.

Perhaps 'others' know less than he does. Vyv may have learned a little during a career as a metallurgist in the oil industry with a "primary responsibility...for the diagnosis of engineering failures". He's also now in a position to say what may have been more difficult then.
 
I think it's worth bearing in mind that the 2000-series VP engines were introduced in 1983, and so the manual would probably have been written in 1982. At that time, CD was the best quality oil available. Volvo Penta are, of course, keen to sell their own-brand oil, which at that time was CD rated.

When the next generation of VP engines, the 2010A/2020A/2030A/2040A, was introduced in 1993, the oil specified in the manual was again CD, probably because that was still the rating of the VP own-brand oil. Fast forward to the introduction of the "D" versions of these engines in 2000, and the manual then was specifying CH-4 oil. Same basic engine, same bearings, same seals, but a higher oil spec, because oil grades had progressed and better engine protection was available.

So, I wouldn't worry too much about trying to buy old-spec CD oil just because that's what it says in the manual. Times change, oil gets better, why not have the benefit of better engine protection from a better grade of oil?

Hallelujah! A concise and sensible explanation. :cool:

Rob
 
Perhaps 'others' know less than he does. Vyv may have learned a little during a career as a metallurgist in the oil industry with a "primary responsibility...for the diagnosis of engineering failures". He's also now in a position to say what may have been more difficult then.

I wasn't in any way denigrating his experience, simply pointing out that there are various opinions on the oil issue. As I pointed out, the fact that Volvo Penta upgraded their recommended oil specification for the 2010/20/30/40 series engines between 1993 and 2000 would seem to indicate that, in the manufacturer's opinion, better quality oils are suitable. For the current D1/D2 engine range, Volvo Penta recommend even higher spec oils, up to CI-4, yet these are similar technology engines as the older ranges, and are used in the same way by many boatowners (short runs, low revs, light loads, low temperatures).
 
To be fair Volvo have a reputation for ramping things up, esp prices.

I don't think my engine manufacturer cares which oil is used as long as it is 20:40. For reasons of economy I can think of no reason to go for anything but the most basic, Mineral stuff.
 
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