Last post by Ralph Hinkle - Yahoo Message Number: 17159We have a 34ss and tow a jeep Liberty. I have learned the limits of the engine/5 speed transmission the hard way. Leaving Needles going to Barstow is a long grade on I40. I wanted to use the horsepower curve so I turned od off and ran the engine at about 2900. The engine didn't go to the red zone, but the transmission did. I guess the input shaft got hot enough to damage the seal. The hot fluid smelled up the unit. I now have a sometimes recurring problem with transmission fluid odor. I have lost a modest amount of fluid over the last 20,000 miles or so. I think I need a new front trans seal.
If I turn the od off and run 2400 - 2600 rpm the temperatures are manageable for extended pulls. If the trans shifts down, I only let the engine run up to 3000 rpm for a minute or less, depending on the transmission temp. The trans temp guage lags the temp at the input shaft or trans hyd pump.
Last post by Ron Hall - Yahoo Message Number: 17158I do not think leaving OD switch on would cause a gasket to go bad. I did use the OD switch to keep rpm's up so engine would not lug on hills.
Last post by Greg Brown - Yahoo Message Number: 17155Yes, you should change your oil before winter. Organic acids are formed during the combustion process and some of those organic acids collect
Last post by Dave Miah - Yahoo Message Number: 17152There is one argument for changing the oild before storage, and that is that the oil will be thicker and will cling to the components better over the winter. But I bet my lube engineer co-worker would say it would be hard, if not impossible to measure that difference. You'd probably be best off to pull the fuel pump fuse at start up
Last post by Mark Yackley - Yahoo Message Number: 17150In around 40 miles, all the moisture will be evaporated out of the oil, and I always store mine with the fuel tank full to the brim and I put an additive in to combat moisture. Living in the Seattle area we see lots of moisture and I have yet to have the moisture in fuel sensor light up.
If you're going to pick one or the other, and it's not going to get started at all during the winter, change it after. Otherwise, next spring you'll be driving around on oil that's been collecting moisture all winter. But if you can, I would start it at least once a month and let it warm up fully to keep the internal part surfaces covered