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yanmar 3ym30 inboard diesel engine oil specs ?? #4095376 05/12/16 11:44 PM
Joined: May 2016
Posts: 5
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vanni Offline OP
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hello to the forum,

i have a question about how choose the best antiwear oil
for my sailboat yanmar 3ym30 diesel engine, that i use
both shortly - from 15 minutes to 1 hour - at low rpm for undocking/docking operations or ungeared for battery charge,
and for long runs at higher rpm - the engine is rated 3600, i run it at 2800/2900 - , even continuosly for 50/60 hours, mostly when there's wind absence in the mediterranenan hot season - and with the engine located in a narrow engine room ventilated as it is possible -.

the operating manual states the following:

Use the following Lubricating oil:

API Classification ........... CD or better
TBN value: 9 or more
The oil must be changed when the Total
Base Number (TBN) has been reduced
to 2.0.
*TBN (mgKOH/g) test method;
JIS K-2501-5.2-2(HCl), ASTM
D4739(HCl)
SAE viscosity ......... 10W30 or 15W40

but then says:

DO NOT use The following engine
oils.
API : CG-4, CH-4
ACEA : E-1, E-2, B grade
JASO : DH-2, DL-1
Reason
API CG-4, CH-4
In case CG-4, CH-4 is to be used for
YANMAR YM diesel engine series,
there is a possibility that excessive
wears occur on the valve train system
due to the content of oil.

my trouble is that i find the cg-4 ch-4 specification in quite every modern diesel oil, and btw,
i wonder which elements in the the cg-4/ch-4 oils could lead to a wear in the valve system.

most of gm/ym engine owners avoid to ask themselves any question and use the branded yanmar oil, which is thought to be the mobil delvac mx 15w40 repacked.

somewhere in the internet other people say
"never use synthetic in these engines"

is there any better choice according to you ?

cheers !

Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4095389 05/13/16 01:34 AM
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nyumski Offline
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Mobil delvac MX 15w40 or Mobil Delvac 1300 15w40 or Delo 15w40 for sure


14 Toyota 2.5 D4D - PTT 10w30 CL4

Instagram = riomahatra
Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4095427 05/13/16 05:10 AM
Joined: May 2014
Posts: 1,429
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yvon_la Offline
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i was gona suggest mobil delvac le 5w-30 but now that you mention cg-4 and ch-4 are a nono and given cj-4 is also a cg-4 and ch-4 as most oil will be . i dont know what oil you could use. i ll have to look up online but i dont doubt the manufacturer of the boat engine as the right of it ,i sure wish i knew what tho


Truck driver
Nissan versa note s 2014 total classic 5w30(qc.ca) drivework oil filter
Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4095435 05/13/16 05:21 AM
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yvon_la Offline
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cd,cf,cf-4,ci,ci4 are accepted
never use cg-4 or ch-4 oil
but it says use an oil that meet or exceed his mentionned guidline or classification
can any explain this cg-4 ch-4 problem?

http://www.yanmarmarine.com/theme/yanmar...AYMM-EN0024.pdf

page 35

API : CG-4 , CH-4
ACEA : E-1, E-2 , Classe B
JASO : DH-2 , DL-1


http://www.hisse-et-oh.com/forums/forums-techniques/messages/324606-huile-moteur-yanmar in french but it is easilly understandable

Last edited by yvon_la; 05/13/16 05:25 AM.

Truck driver
Nissan versa note s 2014 total classic 5w30(qc.ca) drivework oil filter
Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4095440 05/13/16 05:39 AM
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Posts: 1,429
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yvon_la Offline
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Introduced in 2006 for high-speed four-stroke engines. Designed to meet 2007 on-highway exhaust emission standards. CJ-4 oils are compounded for use in all applications with diesel fuels ranging in sulphur content up to 500ppm (0.05% by weight). However, use of these oils with greater than 15ppm sulfur fuel may impact exhaust after treatment system durability and/or oil drain intervals. CJ-4 oils are effective at sustaining emission control system durability where particulate filters and other advanced after treatment systems are used. CJ-4 oils exceed the performance criteria of CF-4, C-4, AH-4 and C-4.

cj-4 .so only thing i can understand is that diesel for marine boat as more then 15 part per million of sulfur .if it is the case then yes and older oil would be required


Truck driver
Nissan versa note s 2014 total classic 5w30(qc.ca) drivework oil filter
Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4095446 05/13/16 05:48 AM
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yvon_la Offline
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oh italy? didnt notice this maybe not all country are required to american regulation!i know in usa yanmar would be required to mod their engine so they abide by the rule here but if they arent in america maybe italy version use a different oil standard

Last edited by yvon_la; 05/13/16 05:48 AM.

Truck driver
Nissan versa note s 2014 total classic 5w30(qc.ca) drivework oil filter
Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: yvon_la] #4096008 05/13/16 03:59 PM
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vanni Offline OP
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my engine dates back to 2008.

i suppose the diesel fuel sold now in italy / ue fulfill the en-590 rule for diesel :

https://en.wikipedia.org/wiki/EN_590

probably the sulphur content is that or less.

do i stick to delvac mx 15W40 yet ?

Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4096025 05/13/16 04:24 PM
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vanni Offline OP
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Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4096139 05/13/16 06:57 PM
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nyumski Offline
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Originally Posted By: vanni
my engine dates back to 2008.

i suppose the diesel fuel sold now in italy / ue fulfill the en-590 rule for diesel :

https://en.wikipedia.org/wiki/EN_590

probably the sulphur content is that or less.

do i stick to delvac mx 15W40 yet ?



i think delvac mx 15w40 already answer your problem as per u mentioned above


14 Toyota 2.5 D4D - PTT 10w30 CL4

Instagram = riomahatra
Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: nyumski] #4096299 05/14/16 12:27 AM
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vanni Offline OP
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thank you

Re: yanmar 3ym30 inboard diesel engine oil specs ?? [Re: vanni] #4104739 05/23/16 08:17 PM
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JR Offline
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Bulk 15w-40 is all the o/h's i do at work get.
I do a handful of yanmar a year, sidework. I runin on hd30/40, send out with M1 0w-40. If M1 is not used, i indorse a hdeo 10w-30 to my customers.


Harvey


97 F250HD 7.3 320K 01 Astro 220K
93 metroXFi 94.5K
01 Impala 300K
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