MrDiesel

I am fairly early to the diesel world and am changing my truck oil for the first time.<br><br>What oil and filter does everyone use for the 24v CTD????

Fishcop

Howdy Mrdiesel, welcome to the sight.....I run 100% synthetic, AMSOIL 15w-40, with the AMSOIL filter. I've used this brand of oil for 10 years in everything from diesels to outboards with absolutely no problems.

Mr. 45

I use Rotello 15-40 oil and Fleetguard filters.

Shovelhead

Howdy Mr. Diesel ;D
Valvoline Premium Blue oil, and Fleetguard LF3894 oil filters.
Get filters at www.genosgarage.com, or your local Cummins parts house......not from the dealer.
Dealer pricing example-fuel filter for 24 valve Cummins-$47
at Genos or Cummins exact same filter-$14. :

Roger rodbolt

Mr. Diesel,<br>Everyone has their favorite oil and that's okay. I have no knowledge of an oil related failure in any 5.9 Cummins that had certified diesel oil of proper weight and timely oil changes. I do know of engine failure (multiple) because of oil filter breakdown. You will do well to use the proper Fleetguard oil filter and that will also keep your warrenty intact. Larry

HC

With a '99, you might want to consider using whatever the previous owner used (provided it meets proper ratings).<br><br>I concur; Fleetguard LF3894 filter is the way to go. If you can't find locally call Genos and they'll drop it on your doorstep.<br><br>Delo is my favorite Dino oil; near synthetic properties, and easy to find. <br><br>If you want to switch to synthetic, I agree, Amsoil 15W-40 Heavy Duty Diesel and Marine is a great choice and the one I'm using. Mobil Delvac 1, 5W-40 is a great choice too. For the first two changes, I would NOT extend the change interval at all, just to give the syn oil a chance to clean out any deposits from the previous oil.<br><br>

Stamey

Yeah, what those guys said about oil. I use Amsoil myself, oil and filters.<br>Stay away from Fram and Wix filters though. This TSB will explain:<br>http://dodgeram.info/tsb/2001/09-004-01.htm<br><br>You should also reads this one:<br>http://dodgeram.info/tsb/2001/09-003-01.htm<br><br>And consider them the gospel.<br><br>Chris

Ruralmedic

I had no clue what the previous owner ran in my truck. I intially ran Rotella-T w/the Fleetguard Stratapore filter, and just recently switched to Amsoil 15W-40 using their filter. I used the Amsoil engine flush prior to putting the synthetic in, as recommended. The pour point of Amsoil is like -45 F, more fluid for those cold start ups. <br><br>Has anyone used a Mobil 1 oil filter? I'm toying with the idea of trying one. I've heard they use a synthetic filter media, have a strong case, and that it's quite efficient. They're available locally for about $12.

KC

I have switched to Amsoil 15w-40 and love it, you also cant go wrong with Fleetguard Stratapore filter, you can purchase them at Genos at: www.genosgarage.com<br><br>KC<br>

MrDiesel

Wow, <br>Thanks for all the tips, I am convinced that the fram filter I have now is junk, I will order some fleetquards..I am currently using rotella T 15w-40. I dont have cold winters and rarely see mornings below 30 degrees.<br><br>As for oil, wow is the amsoil expensive any cheap places to find it......<br><br>Thanks,<br>Rich

PourinDiesel

Delo 400 is what I use, good stuff.<br>Premium blue and Rotella are also great oils.<br><br>The Fram filter along with other cheap filters have burnt up many pistons in the Cummins 5.9's, pieces from the filter media come loose and clog the little piston cooling nozzles.<br><br>So I would advise Fleetguard or Mopar brands.<br><br>--Justin

Dave65

Hello Mrdiesel,welcome..
I use the Amsoil 5w 30 synthetic year round and it works great..

PS..Yes you want to stay away from the Fram filters..

HC

[quote author=MrDiesel link=board=4;threadid=8948;start=0#86267 date=1041279832]<br>I dont have cold winters and rarely see mornings below 30 degrees.<br>As for oil, wow is the amsoil expensive any cheap places to find it......[/quote]<br>Rich,<br>For your temps, the Delo would be just fine all year, and very economical to use. In a synthetic, you'll find the Amsoil 15W-40 is much less expensive than the 5W-30, and a number of folks seem to have equal or better oil analysis results with the 15W-40. Don't really know why some get better numbers with 5W-30 and others with 15W-40, but I would guess it has to do with the number of cold starts for each individual.