Howdy Folks,
I am coming up on my first oil change and was wondering if anyone has a suggestion on synthetic oil.

Thanks,

Check out the Fluids discussion area. LOTS of info there. :ro)

Amsoil all the way :ro)

Amsoil all the way :ro)
x2

Amsoil all the way for me also.

if its your first oil change i would weight till at tleast 10,000 miles are on the OD befor using synthetic oil.

x2
X3:ro)

X4:ro)

X5

Definately wait till 10K on odometer then synthetic all the way. Best I've found hands down is Royal Purple 15W40. This oil is bringing back excellent oil analysis reports after 14,000 miles in the crankcase. Lab said try 17,000 this time. Will let you know how that works out.

AMSOIL all the way

Amsoil!!!!

Definately wait till 10K on odometer then synthetic all the way. Best I've found hands down is Royal Purple 15W40. This oil is bringing back excellent oil analysis reports after 14,000 miles in the crankcase. Lab said try 17,000 this time. Will let you know how that works out.
:exactly: Good idea...

What do you all think about Rotella T Synthetic? It's inexpensive and easy to get at Wal-Mart.

What do you all think about Rotella T Synthetic? It's inexpensive and easy to get at Wal-Mart.

I've been using Rotella T Synthetic for the past year and have no problems. Like you, I like the convenience of it being readily available and affordable.

What do you all think about Rotella T Synthetic? It's inexpensive and easy to get at Wal-Mart.

That's what I'm running... Ran three changes on Rotella conventional at 5k miles each (to 15,000 miles), then switched to the synthetic for every 10K miles. At 28k miles now. As inexpensive as it is, I can afford to change it every 10k whether it needs it or not.

I use redline 15w-40 and mobil one delvac syntetic 5w-40

I am also running the Redline 15W-40 Diesel. I have not seen a whole lot of feedback on that oil on these forums. I actually run Torco synthetic in all my other vehicles and bikes, but could find nobody that was running their diesel only oils in their trucks so I figured I would run the Redline. I wonder if one of the downsides of the Redline for people is the cost? It certainly cost more than the Amsoil and other brands. I will stick with the Redline for the time being......seems to be working well.

The general consensus on Dino oils is that Delo is a very consistent performer. So why not try their synthetic version of Delo? The 5w40. Great heat and cold characteristics on top of the proven protection offered by Delo 400.

I have been running Red Line for about 8k and it is doing well.

Now that Mobil 1 is becoming available again, is it worth the extra cost, or would Rotella T synthetic be okay? Looks like based on this thread, Amsoil, Mobil 1, Redline, and Valvoline synthetics are popular -- all more expensive than Rotella T (which is actually a "pseudo-synthetic).

Now that Mobil 1 is becoming available again, is it worth the extra cost, or would Rotella T synthetic be okay? Looks like based on this thread, Amsoil, Mobil 1, Redline, and Valvoline synthetics are popular -- all more expensive than Rotella T (which is actually a "pseudo-synthetic).

5erDriver,
Not sure what you mean by "pseudo-synthetic", but if it's whether Rotella T Synthetic is a synthetic blend (half conventional, half synthetic), their web site states that it is a "fully synthetic heavy-duty diesel and gasoline engine oil". Check out the link:

http://www.rotella.com/products/rotella_t_synthetic.html

I have been running this product for a little over a year now in temps ranging from lower -20's F to upper 90's F without any problem. There have even been cases where the truck sat for durations of a week in single digit temps without any plugin time. Needless to say, it started everytime with no noticeable drag in cranking speed.

What he means is that it is not "synthsized" but is ultra refined dino, which after the Mobil vs. Castrol lawsuit, can now legally be called synthetic. Rotella syn. is a group III synthetic and Mobil 1 is a group IV.

What he means is that it is not "synthsized" but is ultra refined dino, which after the Mobil vs. Castrol lawsuit, can now legally be called synthetic. Rotella syn. is a group III synthetic and Mobil 1 is a group IV.

Thanks for the explanation, guybb3. Why do lawyers have to muck everything up.:D

Now that you have enlightened me, I found a good right up on motor oils (Google is my friend). For those intertested, here it is:

http://motorcycleinfo.calsci.com/Oils1.html

I used Hydrotex Hyfilm Supreme 15w40 Hydrosynthetic. The hydrosynthetic blends the best characteristics of regular mineral oil and synthetics. I have also put all synthetics in my differentials too. Don't need to wait until the 10,000 mile mark either.

if its your first oil change i would weight till at tleast 10,000 miles are on the OD befor using synthetic oil.

Why wait 10,000 miles? I switched over on my second oil change or around 1500-2000 miles, no issues or oil burning to date. Your rings are seated long before 10k miles.

The general consensus on Dino oils is that Delo is a very consistent performer. So why not try their synthetic version of Delo? The 5w40. Great heat and cold characteristics on top of the proven protection offered by Delo 400.

I wish I could find Delo 5W - 40 synthetic oil. In my part of Texas (Houston/Galveston) guess nobody sells it.

Go to a Chevron dealer and inquire there. Should be a bulk Chevron distributor near you somewhere. You may have to order a case or two, but then you will be set for some time. Make sure it is the latest API spec though.

Motul 300V

Schaeffer 200X dino oil with moly--oldest oil co. in our country--you think they might know something?????

Anything less than AmsOil is well....LESS!!! I have been using AmsOil products exclusively for 28+ years. It only costs more until you use it. Let oil analysis rule your oil/filter changes. You can't go wrong.

Anything less than AmsOil is well....LESS!!! I have been using AmsOil products exclusively for 28+ years. It only costs more until you use it. Let oil analysis rule your oil/filter changes. You can't go wrong.

What makes Amsoil better than any other high end quality product?

If your oil doesn't see temp extremes or the drains aren't extended your best bet for wear protection and dollar for dollar benefits will come from dino and regular oil changes. PERIOD

On the other side of things I'm actually entertaining the thought of using synthetics with the bypass oil filter for the convienance of extended drains but my past oil analisis results favor dino by a slight margin in wear numbers. Not enough to really matter but it does reinforce the fact that todays dino oils perform exceptionally well and are no less suitable than synthetics for most users.

Chevron sure seems to speak highly of their dino as compared to synthetic. See below......I'd say the best bet is to evaluate your situation.

Heavy Duty Motor Oils

Chevron Delo® 400 Multigrade SAE 15W-40
Chevron Delo 400 Multigrade heavy duty motor oil is an industry leading, super premium quality "universal" engine oil which exceeds industry and engine manufacturers' performance requirements. It is formulated utilizing the most advanced additive technology available to provide outstanding engine protection under both pre- and post-1998 EPA exhaust particulate emissions standards for on highway diesel trucks, using both high and low sulfur diesel fuels.

Chevron Delo 400 Multigrade is formulated with ISOSYN™ base stocks, which rival synthetics in critical engine tests and an optimal blend of the latest technology in dispersant, detergent, oxidation inhibition, antiwear, corrosion inhibition, viscosity improver, and defoaming additives.


Chevron Delo® 400 Synthetic SAE 0W-30, 5W-40
Chevron Delo 400 Synthetic heavy duty motor oils are multipurpose 100% synthetic lubricants formulated for use in gasoline and diesel engines, torque converters, gear cases, and hydraulic systems operating in subzero arctic-type temperatures. They are manufactured using stable synthetic base stocks. These oils utilize highly dispersed viscosity index improvers that promote stable viscosities and soot dispersancy between oil drains.

I run AMSOIL in everything including my lawn mower works great. Tore a Kohler command apart a 2900 hour and the walls wherent scored at all atleast to the naked eye. Use to run mobile one synthetic then a buddy was running AMSOIL we sent them both in to be tested at 10000 miles the mobile one was almost shot but his AMSOIL was still good to go have had my oil tested at 20000 subsiquentally running AMSOIL and it still tests alright. But I do change it at 20k. If you do switch to a full synthetic though and you where running dino oil you should run some kind of engine flush through to get out any deposits so you can get the most out of your synthetic.

I have been running Royal Purple with an FS2500 bypass filter, and send out a sample for analysis every 5,oo miles with a filter(s) change, comes back perfect every time. Only 1ppm aluminum, after 10,000miles, and soot was not measurable, I have also used amsoil in this truck also and had good luck, but I'm glad I switched an will stick with RP.

You like the royal purple huh. Do you think I should try it or just stick with AMSOIL?

Stick with the Amsoil

No reason to wait 10K miles to switch to synthetic. You can do it anytime and when you do go with the new Amsoil 5W-40. I use the 15W-40 and have over 30K miles on the oil and its as good a shape as the day I put it in.

Greg

Nothing - they are just suited for different things and made my different companies! The top dollar oils are all the same ( got informed of that from a very reliable family friend who has been in the oil business all his life)

From what I just read, the New Amsoil 5w-40 diesel oil is for 2007 and newer engines. This is because they user lower amounts of ash, phosphorus & sulfur to keep from plugging up the particulant filter in the exhaust. API CJ-4 (5w40) for 2007 and newer and API CI-4 (15w-40) which is recommended for the pre 2007 engines (both with and without egr valves). Their literature states that the new Synthetic 5w-40 (DEO) is backward compatible but for increased protection and performance for extended drain intervals, AMSOIL continues to recommend Synthetic Heavy Duty Diesel & Marine Motor Oil (AME) which would be the Synthetic 15w-40 (for pre 2007).

From what I just read, the New Amsoil 5w-40 diesel oil is for 2007 and newer engines. This is because they user lower amounts of ash, phosphorus & sulfur to keep from plugging up the particulant filter in the exhaust. API CJ-4 (5w40) for 2007 and newer and API CI-4 (15w-40) which is recommended for the pre 2007 engines (both with and without egr valves). Their literature states that the new Synthetic 5w-40 (DEO) is backward compatible but for increased protection and performance for extended drain intervals, AMSOIL continues to recommend Synthetic Heavy Duty Diesel & Marine Motor Oil (AME) which would be the Synthetic 15w-40 (for pre 2007).

It also has a lower TBN package to start, making it more difficul to extend OCI's.

It also has a lower TBN package to start, making it more difficul to extend OCI's.


Even with the lower TBN with ULSD you can still run longer on changes because the oil won't be breaking down as fast because the fuel will not decrease the TBN as fast as LSD.

I am not 100% positive on this, but I don't believe its the 500PPM of sulphur in Diesel that depletes the TBN of oil.

Many factors will lower the TBN. The diesel quality is one that will have a big role.

Many factors will lower the TBN. The diesel quality is one that will have a big role.

Absolutely true.

Most of us would probably be just as well of with a CI-4+ oil versus the CJ-4. Mobil Delvac 1 gets my vote for now. The Amsoil 15W-40 sythentic is good stuff too besides it's probably closer to a 10W-40 than a 15W-40 anyway.

I like running Mobil 1 Delvac, but it is a PITA to find. I am thinking of switching to Amsoil or Rotella syn.

Most of us would probably be just as well of with a CI-4+ oil versus the CJ-4. Mobil Delvac 1 gets my vote for now. The Amsoil 15W-40 sythentic is good stuff too besides it's probably closer to a 10W-40 than a 15W-40 anyway.

Most of us that have pre-2007 build engines can run CI-4 just fine even with ULSD. If you compare price between the CI-4 and CJ-4 you will see a difference too.

Amsoil is a pioneer in synthetic oil...that being said, I don't much care for their method of marketing (Amdroids)....I have bought the Amsoil products for over twenty years....the Amsoil chemists and engineers are top flight....the company made its name with synthetic oil, but in order to survive I guess they branched out into marketing alot of other shyte....

For diesel aplications, I have always used the AME Marine oil...Good TBN #...the 15W40 is just a marketing gimick...the marine oil is straight 40 weight oil with only a few inhibitor packages added....Amsoil markets the Marine oil 15w40 because the oil will pass the tempeture pour/flow
tests for a 15W40 oil.....there are no viscosity packages in this oil (no foaming)....while I don't live in the cold climates (Vegas), I do frequent the mountains in winter.....I have never had a problem with the Amsoil Marine in severe cold....

In the final analysis, I guess each of us goes with what you know.....
Synthetic is going to out perform conventional Petroleum oil...Period

From what I just read, the New Amsoil 5w-40 diesel oil is for 2007 and newer engines. This is because they user lower amounts of ash, phosphorus & sulfur to keep from plugging up the particulant filter in the exhaust. API CJ-4 (5w40) for 2007 and newer and API CI-4 (15w-40) which is recommended for the pre 2007 engines (both with and without egr valves). Their literature states that the new Synthetic 5w-40 (DEO) is backward compatible but for increased protection and performance for extended drain intervals, AMSOIL continues to recommend Synthetic Heavy Duty Diesel & Marine Motor Oil (AME) which would be the Synthetic 15w-40 (for pre 2007).

:exactly: TBN on the new DEO 5-40 oil is much less than the AME 15W-40 and check the numbers on the 4-ball wear test. The AME 15W-40 is a better lubricant. Only use the DEO 5W-40 if you have the new engine with the particulate filter.

Mobil 1 Turbo Diesel oil 5W-40 from Auto Zone $5.99/qt

Amsoil all the way :ro)
where do you find amsoil in CT?

where do you find amsoil in CT?

UPS will drop it anywhere, even CT:D