Changing Oil in 2005 Workhorse.....

[gtcoatie]

I bought the unit in September and just want to change the oil before winter sets in. I can do it myself, so the cost will be minimal.

My question is, how many people use synthetic oil in the MH's? Also, does anyone know for sure if the 2005 Allison Transmissions came with synthetic fluid?

Thanks ahead of time....

[gtcoatie]

I bought the unit in September and just want to change the oil before winter sets in. I can do it myself, so the cost will be minimal.

My question is, how many people use synthetic oil in the MH's? Also, does anyone know for sure if the 2005 Allison Transmissions came with synthetic fluid?

Thanks ahead of time....

[FrontRangeRVer]

There are lots of oil posts on this forum. I use Mobil 1 Synthetic 5-30w, and change it myself, as it's much easier to change myself than any of the other 4 cars I own.

I believe that it was in 2006 when Allison changed over to Transynd Synthetic in their transmission. Someone else might clarify this.

EDIT: since this was originally posted in the Winnebago forum, I asked the moderator to move this to the Workhorse forum for more exposure.

[edgray]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Also, does anyone know for sure if the 2005 Allison Transmissions came with synthetic fluid? </div></BLOCKQUOTE>
gtcoatie: quoting from the WCC chassis guide (available as a free download-see top of forum) Allison trannys in WCC chassis went to full synthetic TranSynd effective on build date beginning April 6, 2005. ED

[bowats]

I have used Mobil 1 in mine since the first oil change. I do all my own service. Much less expensive than the dealer, and I know it is right.

[oemtech]

Use any good brand name Synthetic oil with 1 quart filter and you will be good to go.

As Edgray says ... Transynd from Apr 06.

OOPS.. Finger check

[edgray]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">As Edgray says ... Transynd from Apr 06. </div></BLOCKQUOTE>
Sorry Dale, but what I said was APRIL 6, 2005

your post might lead people to think April 2006, which is incorrect. ED

[obbm]

Calling the Allison Tech Line got me the information that the WCC Tech Line at 877-246-7731 could tell me from our VIN whether our transmission was originally filled with Transynd. This is not the Lake Havasu number which is 877-946-7731. The change from Dexron to Transynd took place in April 2005 at a specific VIN. Our Damon Intruder is a 2006 with a 2005 chassis. Unfortunately, our VIN was apparently a few weeks before the change and we got Dexron. If you call the Tech Line you will probably get a very definite answer about your trans fluid.

[depchief]

I have switched to synthetic motor oil and use the 5/30. The oil filter I use is a 1 quart NAPA 1060

Some will question 5/30 but the fill cap says 5/30 so I use it.

[Edmund A Skibinski]

I changed my transmisson oil to Transynd at the 15,000 mile mark and went to full synthetic motor oil(Mobile 1)at the 10,000 mile mark, everything is performing very well. Ed.S