What Engine Oils do you guys use?
 

What engine oil do you guys use on your diesels?

I am on Mobil 1 Delvac 5w-40 syn that's what previous owner used for past 5 or 6 years after engine rebuild!

I realize you are new here..
Please do a search... and delete this thread....
thanks, Greg

Please, oh please do a search
 

and delete this thread.

Kevin

you guys could be a little more friendly about it.

"i think if you did a search youd find all of the motor oil information you need"

something like that

Friendly AND polite?
 

I'll try!

Dear mslipac,

Welcome to this forum. You will find that there is a vast amount of information on this site.

One area where a vast amount of information has been given is the "Oil" issue. The archives of this forum are filled with debates and data on oil. You will find more info than you will want to look at so settle in for a long day/night of reading and enjoy. Once you see the depth of coverage on this subject then you will probably want to delete your original thread or be prepared to be ignored or get a repeat of what is already in the archives. Please don't be offended.

Kevin

Grdenko,

How's that ?

Oh geez, look mslipac's registered date! November 2002! So we have to be polite for over a year? When are we allowed to be sarcastic? 2 years? 3?

Look at my registered on date. I've earned the right to be a crochety old man. :rolleyes:

Uh-OH!
 

Now be nice! You forgot to say please look at my registered on date. LOL
:D :eek: :p ;) :rolleyes: :cool: :)

Kevin

whoa guys, take it easy, i was only kidding! but i guess you didnt pick up on that. no, please, be as mean, unfriendly and "crochety" as you like. thats what i like about this forum, people arent afraid to tell you to shut up, or that youre an idiot.

(i cant tell if im kidding this time or not, i cant tell if you are either though, so whatever)

mslipac

you could do a search, but to answer your original question...

chevron delo 15/40


:)

Delo 400 is way better than any synth oil under any circumstance no matter what, period!


badda boom!
awaaayyy we go:D

I tried all sorts of oils in the 300CD.

Mobil1 5w-40 delvac 1
mobil1 15w-40 delvac 1300
Kendall 15w-40 (from the dealer)
Castrol 15W-40 (from the dealer)

didnt notice a single difference...

in the E420.. since it's had Castrol GTX (20W-50/10W-40) all its life.. it gets that...

the Celica gets whatever Jiffy Lube put in it (Pennzoil 5w-30).. ill change the oil myself this winter and throw in Castrol GTX/Mobil1 (10W-30) since they are easily available.

If I just stick a hot poker in my eye now, will this thread die? I'll do it! Really!

:p

WHEEEEEEEEEEE!!! Sounds like fun :D Okay, my turn to jump into the fray...

I'll second the vote for Chevron Delo 15W-40...I've been using that in every diesel I've owned (a total of 4, out of a total of 6 vehicles :)), and have never had an oil-related problem. :cool:

My choices, in no particular order:
Delo 400
Delvac 1300
Pennzoil Longlife
Rotella T

I agree with Grdenko. No reason to be rude about it, since:

A) I don't see anyone's name as owning this site,

B) No one is under any obligation or duress to click on this thread. You don't care about oil, move on.

But that takes away all the fun of jabbing each other in the eye:D

I said " Please" when I made the request...
I use Delo 40 wt.

I have used rotella t since for two years.
My 2 cents.





















=

W0ow, ANOTHER oil thread! Anyone mind if I start one to make it an even thousand?

BTW, Mobil 1 15W-50

I always try to say please and thank you!
 

Kevin

What the heck. The forum is kinda quiet anyway;) Poor mslipac will probably never start another thread here again though.

ttt, tlj etc
 

Not a Mercedes, but I've had three Peugeot diesels and used Penzoil Long Life SAE30 single weight, in the engine and transmission.

Delvac 1 for synthetic and Delo 400 for dino:) and you won't go wrong. It is up to you whether you want synthetic $$ or dino:). But the KEY thing is what LB used to say all the time? Change it HOT/OFTEN.

sorry guys didnt meen to step on anyones toes

I use Amsoil 15/40, got started on it when I bought my daugthers 240D . The PO had used it since 40K on the car. The engine at 120K was in remarkable shape and still is.

I just bought 4, 5 quart jugs of Mobil 1 15-50 @ $22.62 ea. plus tax.
I have been using Castrol 20-50 for about 12 years in the 80 300SD, with no problems (changed at 2k-2.5k miles). Found this site, which is great, and find I am using the wrong oil.
Have two deisel Mercedes, after reading, searching and researching on here thought that would be the way to go.
Maybe I should have went Delo 400 15-40, a whole lot less cost.
Thanx for the help all

Petro Canada 5w-40 synthetic. Have used Mobil Delvac 1 5w-40 syn.

You still gonna be using the wrong oil.:eek:. The Mobile 1 for diesels is Delvac 1 - made by Mobile:);).

I love an oil thread in the winter:).

Well, I guess we could start up an Air Conditioning replacement for R12 thread in the winter too....Usually we have switched to glowplugs and block heaters by now....

If you use synthetics, Delvac-1 is about the best diesel synthetic you can possibly buy, with Amsoil 15W-40 in second place, and Mobil-1 15W-50 in third place (all are EXCELLENT oils). But you DO NOT want to use SynTec, Rotella Syn, or Delo Syn - these are not true synthetics (but probably better than dino oil).

For dino oils, Delvac-1300 and Delo-400 are probably the best - Rotella is nothing special. Biggest thing is to make sure you are using diesel rated (CH, CH, CI, etc) oil! Very few 20W-50 oils are diesel rated, and not all that many 10W-40's or straight 30's are either. This is the most important item - if it's not Cx rated, it can't suspend the soot properly, and you'll get excessive engine wear.

For the record, I use Delvac-1 and very strongly support using full-synthetic oils in almost all vehicles, with extended drain intervals, based on the results of oil analysis (which is 10-15kmi for my cars).

YMMV, etc. Now can we close this thread before it swells into a 10-page oil war like all the previous threads did? :D

1/2 Delvac 1 5w-40
1/2 delvac 1300 15w-40

Delvac 1300 has a bit of moly, delvac 1 keeps stuff slean, both are compatible mobil products using the same additive packages, so there is no chance of additive clash.

I have tried allthe oils, I have found that delo 400 and rotella give the worst MPG. Pennzoil longlife and delvac 1300 arent much better. Delvac 1 gives reproducible 29-31 MPG (vs 27-28 with the others), but is quite expensive. Doing the mix gives reproducible 29-30, and works great in my 83 300D.

JMH

For Dino oil I would just like to add the Gulf SAE40 XDMO turbo approved oil to the list, off all the Dino oils I have used, this one remians stable even after hard driving under 50c weather with my OM 616 turbo. Otherwise Delvac-1 synthetic rules if one can afford it.

delo 400. cause it was the only jug of diesel rated oil at the little hill billy podunck town that my parents live in where ichanged my oil last. anyway i have no clue waht to look for as far as oil performance goes:confused:

Sometime I'm going to put 2 cycle oil in the crankcase of an old beater just to see what it dose.........

William Rogers........

Did anyone try Walmart and Autozone brands diesel rated oil? They seems to work OK......???

On a budget, any Cx (CF, CG, CH, CI, etc) rated oil will be fine. I'd make sure to change it by 4-5kmi though!

:)

Compared to Rotella in my 84 300SD, running Walmart oil seems to give my engine a little more horsepower. I noticed the same thing with Walmart oil in my 89 Pontiac Grand Prix. Isn't Walmart oil made my Quaker State?

Just clarifying.. you do 50/50 split of 5w-40 and 15w-40

Interesting...

Right. So what weight do you end up with, 10W40?

Delvac 1 around here is $23/gallon. Delvac 1300 is $6/gallon. That's about $30 for oil per change compared to a full-synth change for $46-48 for oil. $16-18 more for synth oil that you get the benefit of 5 weight winter oil that starts easy and pumps up fast. Save $16-18 and still get "most" of the bennies. Seems like ALL the parts decisions with these damn things!

France, Italy and Germany
 

We were visiting friends over the yuletide holidays and found out that the preferred diesel oil there is Castrol RX Super 15W40. Diesel taxicabs uses it.

Is this oil brand and weight hard to find in the US?

Castrol SynTec? **shudder** I bet it's "preferred" because it's cheap. And it's cheap because it's a Group III base stock, which is called "synthetic" by Castrol even though it isn't. I've never seen SynTec in a 15W-40 weight in the USA. If you're on a budget, use Delo 400 or Delvac 1300 and change it often. Otherwise stick with Mobil/Amsoil/RedLine synthetics, not Castrol/Valvoline/Shell etc...

;)

Yes, 5w-40 and 15w-40 mix is what I use... As I have stated, I find that I get the MPG increase of 100% Delvac 1, with less cost.

As for castrol syntec being preferred in europe... Thats for good reason. The syntec sold in europe is a FAR superior oil. Syntec sold in the USA is group III, which isnt really synthetic at all, but can use the name by technicality. The Group IV/V synthetic syntec oils sold in europe is great stuff, and really protects well, certainly on par with Mobil 1 and delvac 1.

Note, you can get a sample of the europeaqn syntec if you find the 0w-30 syntec sold in autozone. It MUST be in a black bottle with red lettering on it, and MUST say 'made in germany' on the back. It actually has a greenish color to it, almost like antifreeze. Protects great, I use it in my truck... Might be ok for newer diesels as well, as it is nearly a 40wt, becuase it is pretty viscous.

JMH

My mistake, it is Castrol RX Super 15W40 and not Castrol Syntec.

JHZR2:
Yes, the Castrol Syntec bottle I saw in Italy is in a black with red label container.

delo gold (sae40).. used to be delo500

by the way i live in the Philippines.. so you might this product under a different name...

redbaronph123,

My favorite diesel oil in the Philippines is Caltex Delo 500 (SAE 40). I see that they have changed the name. I have not found it in the USA. It were here, it would be sold under the Texaco brand.

I'm constantly amazed at the amount of bandwidth associated with the oil threads. I've never seen a topic where so many people are so convinced that brand x is fantastic and brand y is garbage.

Has ANYONE here EVER had a engine problem that was related to using an inferior quality oil? I'd be interested in hearing WHAT failed and HOW you know it was due to faulty/bad oil.

If you use an oil that is approved by the factory and change it according to the factory maintenance schedule your engine will last for far more miles than rest of your car!!

Maybe we could start a new thread - how about this one...

what is the "best" toilet paper??

Sorry - just had to vent.

Tim

I agree almost 100%
Except two issues:

-Marshall Booth's statement that using synth reduces timing chain stretch
-The fact that MPG improves with some oils (particularly synthetic)

Different oils certainly have specific properties which help it excel. Some do better than others, but I think its more having to do with the above reasons rather than an engine wearing out.

Im sure people have gotten 300K+ miles on their engines using whatever API S series oils that were at wal-mart, without even worrying about anything besides viscosity.

Its a very multifaceted argument, with lots of options in brands, additive packages, compositions, weights... Its like going into an ice cream parlor and thinking that youd like to try every flavor. Some might be better than others, but any will make you contenct and be a nice desert.

JMH

Tim has a valid point in general. Like JMH mentioned, you can use crap oil, and probably still get 300k out of the engine if you change the crap oil frequently enough. It boils down to what you want. If engine longevity is the ONLY concern, fine. But some people would prefer some of the more subjective benefits of "botique" oils, i.e. synthetics:

1- Extended drains if desired - less frequent service needed
2- Faster cranking - huge help in cold climates
3- Lower operating temps - for both oil & coolant
4- Higher MPG - ok, this is small, but adds up over time (synth ATF & diff lube help too)
5- Reduced wear? - This is arguable, compared with FREQUENT changes of cheap oil


I want those benefits and choose the oil that provides them. You won't get that from $1/qt Wal-Mart special. But the total engine life may be the same, or not different enough to see a difference, assuming you sell the car BEFORE the engine blows up! :D :D

Delvac 1 5W-40. A fuels/lubes chemist I used to work with when I was in Diesel engine engineering convinced me it is the best.
Just switched from Rotella T.
Am now driving 2000+ miles per month.
Plan to get oil analysis at around 8000 miles. If still OK, will go to 10k mile drain interval.

If I got 300k out of an engine useing $1qt. Walmart oil I would be pretty happy. How many people have actually had an oil related engine falure? The only time people ever have oil problems is if they never change it. As long as the oil is close to the proper weight and the proper API grade for your application, and is changed you will never have an oil problem.