hzjcm8
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Re: What Happens When You Don't Change the Oil
mbopp wrote: When I bought my '04 Envoy the dealer had a "get aquainted" night with the service dept. I was talking with a tech about the 4-valve VVT engine, and he took me in the back where they had one torn apart. Turns out the customer thought that when the "change oil" light came on all he had to do was pump the gas pedal 3 times to reset the oil life. Yup, 60k+ miles and never changed the oil. It was ugly. mbopp, A couple of years ago, I gave a seminar on oil and coolant analysis at the Indiana, Illinois and Tennessee Good Sam state rallies. Here's a link to the slides I used in the class. RV Seminar Slides (Good Sam Club Rallies)377Views0likes0CommentsRe: Allison 1000
fredbon wrote: hzjcm8 wrote: They were (and still are) trying to tell the consumer that their fluids pass both the GM DEXRON-IIIH and the Ford MERCON specifications. Note: I know this because I used to be on the GM Automatic Transmission Fluid Committee that granted GM DEXRON-IIIH licenses. In fact, I go back to 1990 when GM still had the DEXRON-II and DEXRON-IIE specifications. Back to the original question, I know a broken record, can consumers be safe using D3M products in Allison Transmissions? Fred Fredbon (et al), Some of these older DEXRON-IIIH/MERCON (D3M) products are not compatible with Allison Viton seals. Your seals could harden and crack over time if your transmission was built prior to the serial number break point (2006-2007 timeframe). The problem is that, without undergoing the TES-389 seal test, no one really knows for sure which ones are good and which ones are bad. The only older DEXRON-IIIH/MERCON products that are known to not cause problems with Allison Viton seals are those listed on the TES-389 approved fluids list.1.3KViews0likes0CommentsRe: Allison 1000
fredbon wrote: What am I missing, I didn't see any Dextron III brand products, just the equivalent products. Back to the previous recommendations, Dextron Brand is no longer approved. Fred , Allison TES-389 approved products were all, at one time, GM DEXRON-IIIH licensed products. However, the GM DEXRON-IIIH specification was obsoleted after DEXRON-VI hit the market. So, those older DEXRON-IIIH products lost their GM licenses. The word DEXRON (all in caps with a circle R) is a GM owned trademark. After the DEXRON-IIIH specification was obsoleted, manufacturers of those products could no longer legally put the word "DEXRON" on the product labels or containers. That's why these older DEXRON-III products, that are still on the market today, carry the D3M designation. Most of those older products passed both the GM DEXRON-III (D3) specification and the Ford MERCON (M) specification. So, manufacturers began to list their older DEXRON-IIIH/MERCON products using the abbreviation "D3M". They were (and still are) trying to tell the consumer that their fluids pass both the GM DEXRON-IIIH and the Ford MERCON specifications. Note: I know this because I used to be on the GM Automatic Transmission Fluid Committee that granted GM DEXRON-IIIH licenses. In fact, I go back to 1990 when GM still had the DEXRON-II and DEXRON-IIE specifications.1.3KViews0likes0CommentsRe: Allison 1000
allbrandauto wrote: wrong way to do it find a shop that has a trans. flush machine and Allison cooler line adapters and have them do it wont cost alot Allbrandauto, Flushing is not recommended by Allison Transmission. I know because I was involved in writing oil recommendations during my time there at Allison Transmission as the Transmission Fluids Engineer (1990-2009).1.3KViews0likes0CommentsRe: Yearly Service
Ed Manifold wrote: My next question is about changing my Allyson fluid. When I install Transynd Synthetic ATF which will replace my Dexron 111 ATF. I don't think this change will completely replace all of the Dexron so how long should I run the new Transynd before I change it again so that the remainder of the Dexron will be flushed out. Ed, Here's the procedure that I recommend for everyone. I believe this is the best possible solution. You really want the old DEXRON-III gone as quickly as possible in order to get all the benefits of TranSynd. Any old DEXRON-III continues to thin out and, without knowledge of the current condition of the fluid, it's best to just do the back to back changeover. PROCEDURE: Drain old transmission fluid Change the filters (lube and main if transmission is 3000/4000 Series); spin-on (if transmission is 2000 Series) Install fresh TranSynd and check that fluid is in "Cold" band on dipstick Drive for 1/2 hour to warm and circulate the fluid Drain mixture Install fresh TranSynd and ensure that level is correct with transmission in Park, engine at idle and vehicle parked on level surface. I do recommend a fluid analysis once a year on the transmission to ensure against contamination. Hope this helps. Arch Hoagland asked me to give some input.176Views0likes0CommentsRe: Let Me Know if You Have Allison Transmission Fluid Questions
Coyote74 wrote: I have purchased a 2004 winnebago adventurer w allison 1000. The books have paper advertisement refering to trans synd fluids. The rv has 33,000 miles, 1 owner before me. Bought from a dealer. How do I tell if has dexron3 or trans synd. Work horse says use dex 3. Would a test kit for fluids work or is dex 3 in the 2004s.? Coyote74, I will try to monitor this forum more often. I had not been on the forum for awhile as it didn't seem to have much going for Allison fluid conversations. I'm here to help. So, ask away !!! Do an oil analysis and let me take a look at the results. Send me a PM and I can recommend a fluid analysis service. Unlike TranSynd (or one of the other TES-295 approved fluids), DEXRON-III fluids will lose viscosity and thin out over time making them subject to more frequent fluid changes. Workhorse may say DEXRON-III but don't use it. Most of them are not licensed. GM no longer licenses DEXRON-III since the specification has obsoleted around 2006. I know .... I used to sit on the GM Automatic Transmission Fluid Committee. We approved DEXRON-III fluids for the US and World market. The committee began licensing DEXRON-VI fluids and GM obsoleted the old DEXRON-IIIH specification at that time. My recommendation is to get the transmission fluid analyzed and then go from there. You'll need to use an Advanced Test Kit that includes both TAN (Total Acid Number)and FTIR (Fourier Transform Infra-Red) spectroscopy analysis. This will show if the fluid is an older DEXRON-III or TranSynd (or similar TES-295) fluid. Once you know for sure what's in the tranny, then you can make an "educated" decision based on scientific data. Again, I can help with the fluid analysis but you'll need to send me a PM. Hope this helps !!!530Views0likes0CommentsRe: Let Me Know if You Have Allison Transmission Fluid Questions
Daytonaman wrote: Great info! I did TranSynd and filters at 77. Just once. Did not want to rush to judgement. I like the oil analysis idea; if the unit had it initially, that means it never had Dexron, just used TranSynd. Except for some possible make-up. Will an O.A. show fluid composition. Thanks for your expertise. Daytonaman, Yes. The oil analysis will show you if the viscosity and TAN (Total Acid Number) are in the correct ranges for TranSynd. A good oil analysis company will include all of the following tests which will allow proper assessment of the fluid and will show you the fluid composition as well as its chemical and physical properties: Wear metals Contaminant metals Additive metals Water Content Soot Content Fuel Dilution Viscosity @ 100C Oxidation/Nitration TBN/TAN (if it's an advanced analysis) Note: I recommend that RV and Tow Vehicle owners do Oil Analysis every 5-6000 miles on engines and once a year on transmissions and generators. Owners should also do a Coolant Analysis on engines and generators once a year. Data shows that about 40-50% of all engine failures are due to problems related to poor coolant maintenance. I've attached (2) links for your benefit. One is a Technical Paper that I wrote explaining how oils are formulated and what happens to them over time. The other link shows the slides I use when I give seminars at Good Sam Club state rallies. I've given this seminar at Good Sam Club state rallies in Indiana, Illinois, Florida, Tennessee, and Georgia over the past couple of years. Technical Paper on Oils and Oil Degradation My Good Sam Rally Seminar Slides Please pass this information on to whomever in the Open Roads Forum needs this information. IN CLOSING, THE INFORMATION AND LINKS ARE PROVIDED AS A BENEFIT TO THIS FORUM. PLEASE NOTE THAT THESE DOCUMENTS ARE NOT INTENDED AS SALES TOOLS.234Views0likes0CommentsRe: Let Me Know if You Have Allison Transmission Fluid Questions
Daytonaman wrote: This has been covered before, but I was wondering what the cutoff date for allison using transynd on MH4000 xmisions. The coach has a model year late 2002 w/ISM. I changed the fluid and filters at 77,000 one time and wondering if it should be done again. There is only a 1,000 or so on the new fluid. Daytonaman, TranSynd was used in the Allison factory in 2002 but it depends on what was used at the chassis manufacturer for "top off" (factory fill). Some folks don't understand this; but, the chassis manufacturer purchases the transmission from Allison and then builds it into a chassis along with the engine, driveline and cooling system. Then, the cooling system and transmission are topped off with whatever the chassis manufacturer has for "factory fill" transmission fluid. So, it could have been TranSynd but not necessarily. The best way to tell it to do fluid analysis once a year to watch the viscosity and oxidation state. If it remains stable from year to year, then it's no doubt TranSynd. Did you install TranSynd at the 77,000 mile change? If you only changed it once, then you could be running a mixture. The oil analysis would sort this out for you.233Views0likes0CommentsRe: Let Me Know if You Have Allison Transmission Fluid Questions
moisheh wrote: Tom: Can you please answer a quick question. My 08 Dynasty has a 3000MH that has a factory fill of Transynd. I had the Allison shop change the filters today. Unit has 35,000 miles. After the job was done the shop foreman asked me why I did not change all the oil. I didn't think it was necessary. He said it should be done @ 4 years due to moisture????? What do you think? Thanks Moisheh Moisheh, The Allison tech is repeating what he's heard which is not good information. TranSynd is very stable and will last up to 300,000 miles or more. When you change filters, just top it off with TranSynd. Do an oil analysis once a year to check for coolant leaks, water, excessive dirt, etc. The fluid itself will remain stable, but you should check it once a year for contaminants. Water contamination is rare since most water boils off during operation. The oil analysis will measure water content and tell you whether or not you have excessive moisture (water) in the fluid. Typically, you won't have excessive water. It will typically show less than 0.1% water and that's acceptable. Hope this helps !!!!233Views0likes0Comments
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