Will Moderate For Cigars
Date registered: Apr 2005
Vehicle: 2002 ML320, 2005 S430 4MATIC, 2010 F150 Crew Cab
Location: City on the TN River
Mentioned: 3 Post(s)
Quoted: 200 Post(s)
For some reason, there are cases where a good number of automobile owners that forgo common sense in regards to 'recommended service'. I, for one, would not trust these service intervals that are recommended by the manufacturer if I hoped to have a problem free vehicle.
When parts run against each other, a very common thing happens, known as 'friction'. While oils are designed to 'reduce friction', none can ever claim to , altogether, eliminate it. So it stands to reason that moving parts create particulate matter as the result of friction, which will dirty the fluid and reduce the life of the transmission. Coupled with the fact that a manufacturer recommends no service to a transmission, ever, is a recipe for disaster.
Some on this board will say that they have the original fluid after 175,000 miles and are having no problems while others have had failures before the 100,000 mile mark. The one conclusion that can be drawn from this is that there is no way to judge the reliability of all transmissions based on different driving habits and build quality of the transmissions themselves. Some transmissions will be put together a little tighter than others. Some may contain undetectable but defective parts that otherwise would have lasted had the fluid been changed regularly and kept clean. Mix this in with driving habits, running temperatures and those who actually tow with their vehicles and you have the wide varying results you see here.
The dealer changed my tranny fluid at 130,000 miles. It shifts much smoother. The dealer, at first, said it didn't need service, but when I said it had 130,000 on it, the service advisor said 'it is due, then".
Those with 'sealed for life' trannys can ignore the experiences of others on this board who have had problems because they didn't change it, or they can succumb to common sense and do the preventive maintenance. If your transmission fails after you performed the service, then it most likely was too far gone to help anything and you have done all you could do to prevent it. But, most likely, changing fluid will prolong the life of the tranny and save you bucks and trouble in the long run. My 2Â¢.
2005 S430 4Matic 'Morton' W220.183 • 722.671 Rest in Peace
Bells and whistles are thorns and thistles.