Diesel Oil

6 posts / 0 new
Last post
gorgonshead
Offline
Joined: 4/27/12
Posts: 60
Diesel Oil

Hi folks -

Pardon me if this has been discussed before, but I can't get the search engine to search on the word "oil" it being less than 4 letters long.

So... getting set to do oil change. My engine is a M35 Universal/Westerbeke, and the manual says I should use SAE 30 HD, or 10W40.

I have Nigel Calder's book on diesels and he says diesels need

CF, CF-2, CF-4, CG-4, or CI-4 rated oil. He says CI-4 is the best.

I found this on Amazon:

[url]http://www.amazon.com/Kendall-1043357-Super-D-Diesel-Engine/dp/B004RNT0Z...

It seems to fit the bill and is reasonably priced. It is CF-2 Rated.

I also found this on Amazon:

[url]http://www.amazon.com/XADO-Atomic-10W-40-CI-4-Diesel/dp/B006M3U8N8/ref=w...

It is semi-synthetic and is rated CI-4. It is also a good deal more expensive.

1. Any other products recommended?
2. Is this C-rating thing important? Is is worth spending more on the CI-4 rated product?

Thanks in advance.

Peter L

Peter Lundquist
s/v Rafael
1998 Catalina 36
Hull #1669
Salem, MA

Maine Sail
Offline
Joined: 2/26/10
Posts: 324

Shell Rotella T 15W/40 is what nearly everyone uses these days. Delo 400 is another good diesel oil. They are both available at Wal*Mart or any autoparts store.

I would not run a synthetic as Westerbeke still advises the same change interval with either synthetic or conventional oil which makes a synthetic more expensive than is necessary. These engines will go 10k hours + on conventional oil if well maintained and run properly.

-Maine Sail
https://www.marinehowto.com/

 

stu jackson c34's picture
stu jackson c34
Offline
Joined: 12/3/08
Posts: 1270

Peter, the C rating is essential, since that is what rates it for use in diesel engines, compared to gas engines. Synthetics, in addition to what Maine Sail notes, have a tendency to negatively affect seals. Use dinosaur oil.

Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)

FlyMeAway
Offline
Joined: 3/20/12
Posts: 241

Does anyone use anything other than Rotella T 15W-40?

Have to say that for $14 at the local Wal-Mart, seems like a no-brainer.

David
s/v Portmanteau
Hull #2133 -- 2003 MKII
Seattle, WA

stu jackson c34's picture
stu jackson c34
Offline
Joined: 12/3/08
Posts: 1270

Yes, sometimes I get four quarts, sometimes I get a gallon, usually different dinosaur oil available on sale, C rated, of course.

Storing the remaining quart bottle is a lot easier than storing the remaining gallon with less than a quart remaining in it. I don't ever have to fill up with oil between changes.

Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)

LCBrandt's picture
LCBrandt
Offline
Joined: 6/26/07
Posts: 1282

Costco has Delo by the case. Well, heck, they even have dental floss by the case. Ask me why we have a three car garage and no car can fit in it.

Larry Brandt
S/V High Flight #2109
Pacific Northwest, PDX-based
2002 C-36 mkII SR/FK M35B
 

Log in or register to post comments