| Author |
Message |
Mark (63.166.236.3)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, January 04, 2002 - 11:24 am: | |
Thanks to everyone who responded to my lengthy email regarding lube products for our MAN! It really helped! Thanks!
It seems that we can use either 30 or 40 weight in the engine. However, some have suggested we use a multigrade (such as 15W-40).
A couple more questions:
1. Is there a significant different between 30 and 40 weight, or is the difference negligible?
2. Should we stick with a monograde as the mechanics and the manual (cir. 1978) states, or;
3. Can we go with a 15W-40. And if we do, will using a multigrade in an engine that traditionally used a monograde have any adverse effects?
4. Is there a significant advantage to going with a multigrade?
5. Out of curiosity, what oil brand/weight/type do you use, and for what type of engine/coach.
Any input would be appreciated, and THANKS AGAIN!
Mark |
jmaxwell (66.42.92.133)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, January 04, 2002 - 1:03 pm: | |
I would stick with the single grade. Bottom line is this: Multi-grade oil contains less oil and more additives than single grade. As the viscosity rating difference increases, the amount of base oil decreases. About 60% of the additives has nothing to do with lubrication, so it is easy to see that drop for drop, single grade will deliver superior lubrication. About 3 yrs. ago I tried 10w-40 for about 6 months in my 6v92, because it was more readily available on the road. I found that I consumed more oil and had greater engine noise. I didn't notice any detrimental effect on engine parts, but after gathering specs on different oils switched back to 40w thru concerns over the less oil/more non-lubing additives. |
Earl-8-Ky (209.250.53.167)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, January 04, 2002 - 3:59 pm: | |
Do not use a multa grade oil in a DD 2 cycle. You will cut the engine life in half. Go with a 40 wt. oil that is made for a 2 cycle engine. I would recommend s product called Lucas oil addative. It is a very good product and I use it in everything I have. Just my 2 cents worth. |
Scott Whitney (24.205.234.21)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, January 04, 2002 - 7:34 pm: | |
Just a note of clarification for those that may not have read Mark's original post last week sometime . . .
He is talking about one of those German-made MAN engines instead of a Detroit Diesel like most of us have.
Scott |
Jayjay (207.30.115.195)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, January 04, 2002 - 8:45 pm: | |
As much as I dislike additives, I feel that anyone with an older engine should use one that corrects the problems associated with the new "low-sulphur" diesel fuels. The high sulphur content in the old fuel provided a certain amount of lubrication to injectors, valve stems, atc. I can't remember about the Lucas products, but Howe's Lubricator does it, and provides algae/fungi protection as well. I guess you should read the label to see what the local shops have to offer. HTH,and Cheers...JJ |
Rodger Manecke (Rodger) (63.11.248.143)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 05, 2002 - 8:07 am: | |
I'd stay with straight 40W. A $40 investment in a block heater will negate the need for using 30W in colder weather. Prior to startup, I preheat my 8V71 in all temperatures.
Mobile Delvac, Texaco Ursa plus, Shell Rotella, Chevron, all make good HD oils which meet the specs for large diesels.
I've been told by a couple of "experts" that mixing brands of 40W oils will do no harm because, unlike multi-grades, straight grades don't contain the additives which may not be compatible between brands.
So far, I've had no need to do that.
Rodger |
FAST FRED (209.26.87.54)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 05, 2002 - 4:58 pm: | |
Your experts are wrong ,
all oils , even single grade have additive packages.
It is still 10 to 15% of the volume of oil , but at least your not hopeing to get to that "majic temp " that makes thin oil thicken like flour in the gravy.
The package will contain anti foaming stuff , detergent to make the required grade of CD CE CF. as well as rust preventive , and a bunch of other chemicals.
It is always best to use only ONE oil as long as you own the engine ,
so the additive packages don't start a war.
As it's no more costly than the rest
the oil DD sells is as good as any ,
and should do fine in a DD engine .
FAST FRED |
DrivingMissLazy (65.207.109.174)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 05, 2002 - 9:27 pm: | |
Yea Fred, but he stated he has a MAN diesel, not a DD.
Richard |
FAST FRED (209.26.87.103)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, January 06, 2002 - 5:53 am: | |
NO problem , go to the MAN website and find out what they require, and use it.
Many of the more modern engines can live with multigrade oil,
although I had an old Volvo that wanted 20 wt single grade oil.
Now thats hard to find, with out purchasing a 50G drum!
AS there is less "chemistry' happening with single wt, it is always my first choice.
But I would not go against the mfg.
FAST FRED |
|