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Synthetic Engine oil and synthetic auto trans fluids and differential
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Sooty
New User
| Posts: 18
| Joined: 01/09
Posted: 01/27/09
10:59 AM
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Is synthetic oil ok for diesels. I don't know why it wouldn't be but a lot of people seem to think not. What do you guys use and what brands? Thanks
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Ned1999
New User
| Posts: 27
| Joined: 09/08
Posted: 01/27/09
09:07 PM
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I use Shell Rotella T 15 40. It was recommended to me by my friend who works at a cummins service center. It has been a great oil for me so far. But i have heard bad things about some synthetic oils in cummins engines.
1999 Ram 2500 pretty much stock, big plans soon though.
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Posted: 01/28/09
03:54 AM
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i use rotella 15-40 also.i never heard bad stuff about synthetic in a cummings.i use to use amsoil.cant spend that kinda bread now.however i do put amsoil in the diff front and rear.and never put synthetic in a tranny.
01 24v edge dragpak fass150 suncoast hx40 nitrous single stage. 8 hole 150hp injectors k&n hotrod vp44
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mclow
New User
| Posts: 13
| Joined: 10/08
Posted: 01/28/09
03:16 PM
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Automatic transmission fluid is Synthetic
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Posted: 01/29/09
04:30 PM
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say what?
01 24v edge dragpak fass150 suncoast hx40 nitrous single stage. 8 hole 150hp injectors k&n hotrod vp44
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diesel4me
New User
| Posts: 22
| Joined: 12/08
Posted: 01/30/09
08:09 AM
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why waste you hard earned money on expensive synthetics! stick with a good 15-40 oil, shell, chevron delo, and there are many others for diesels, then check with the guys at Lubrication Specialties Inc. www.lubespecinc.com for a great oil additive that will out perform any synthetic oil
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Posted: 01/30/09
02:31 PM
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i hear you diesel4me.and i just dont understand what mclow is talkn about.
01 24v edge dragpak fass150 suncoast hx40 nitrous single stage. 8 hole 150hp injectors k&n hotrod vp44
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diesel4me
New User
| Posts: 22
| Joined: 12/08
Posted: 01/30/09
06:16 PM
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thats news to me as I know there is regular ATF and there is also a synthetic version called Transsynd but hey what do I know
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jball3375
New User
| Posts: 4
| Joined: 06/09
Posted: 06/13/09
06:18 PM
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all 6 speed autos use fully synthectic atf. It's called atf+4 100%synthetic
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MarineOne
Moderator
| Posts: 702
| Joined: 09/08
Posted: 06/14/09
08:59 PM
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Shell Rotella-T SAE 30 in the summer months and 15W40 in the winter ..... and it's the only oil I put in my trucks.
Kris
2006 Dodge Ram 2500 QC 5.9L - No Mods Yet
2008 Dodge Ram 3500 QC 6.7L - Titan Fuel Tank Owner
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Posted: 06/15/09
04:33 AM
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I use SHELL ROTELLA 15-40, change it every 5K miles !!!!
2008 F250 SUPER-CAB 6.4 PSD 2WD 1999 F250 super-cab 7.3 PSD 2WD(sold)
MEMBER- BLOWIN' SMOKE GANG Commerative Heart
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krazo
New User
| Posts: 1
| Joined: 06/09
Posted: 06/20/09
08:33 PM
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I have run Amsoil 15w-40 Marine Diesel in my 2001 Dodge 5.9 24 valve Cummins from the time that I purchased it with 9,000 miles on it. I also changed over the differentials to full Amsoil synthetic as well as the transfer case with outstanding results. Now with over 75,000 miles truck runs like new and even with the 4.10 gearing due to the snow plow package, I stll get 15.5-16 mpg in the city and 18 plus on the highway. Like it or not the petroleum oils are going to go away and they dont hold up! Just before my Ford Dealer (wifes car)closed his doors due to the economy, the service manager told me that the only oils that were shipped to them from Ford were a partial synthetic and a full synthetic. Synthetics are here to stay. Just use a good one. Not running a synthetic in any BMW vehicle will void your warranty. Food for thought!
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