by aspindle@aol.com » Tue May 23, 2000 9:56 am
My objection to the 3,000 mile oil change recommendation I receive from the dealerships is that it is most often portrayed as the recommended maintenance interval specified by Ford which it is not. At two dealerships, service personnel were very emphatic that Ford required a 3,000 mile oil change interval at the risk of any future engine warranty coverage which obviously was false.
I would have less objection to this practice if it was properly portrayed as the dealership's recommendation or the mechanic's recommendation and not Ford's requirement for warranty eligibility.
I also appreciated the response from the other gentleman with the Mazda that drove his vehicle over 200,000 miles and attributes the long engine life to 2500 mile oil changes. In my lifetime, I have kept 3 vehicles past the 150,000 mile point and had another that I sold at 142,000 miles. In all these vehicles, I used a very good grade of oil (which I believe to be the key), the recommended filter and changed the oil at the manufacturer's recommended interval. The vehicle with 142,000 used a little bit of oil due to several hardened valve stem seals but other than that absolutely no engine lubrication problems were ever experienced.
Regarding the manufacturers extending the maintenance intervals as a selling point, Ford, somewhere around 1990 shortened the intervals from every 7,500 miles to 5,000 miles, not because of a real maintenance need but to make it easier for customer to remember (7,500 mile intervals were found to be quite confusing to many customers). Shorter mileage intervals were found only to be needed for severe duty vehicles such as police, taxis and ambulances where it was not uncommon for the vehicles to sit and idle for entended periods without accumulating any mileage on the vehicle. There are, of course, other severe duty situations such as various off-road service that also require shorter oil change intervals but that is not what I am referring to here.
Thanks for reading and responding!