2–7. TRANSMISSION FLUID AND FILTER CHANGE INTERVALS CAUTION: Transmission fluid and filter change frequency is determined by the severity of transmission service. More frequent changes may be necessary than recommended in the general guidelines when operating conditions create high levels of contamination or overheating. a. Frequency. New vehicles delivered from the OEM with a mixture of Allisonapproved TES 295 fluid and nonapproved fluid, or TES 389 Allisonapproved fluid must follow fluid/filter change recommendations outlined in Table 2–2. If the customer fills the transmission with Allisonapproved TES 295 fluid or TES 295 equivalent, the change recommendations of Table 2–2 must be followed. Upon the next oil change, if the customer reinstalls Allisonapproved TES 295 fluid, the fluid/filter change recommendations outlined in Table 2–3 may be used. The recommendations in Table 2–3 are based upon Allison fluid change procedures and the transmission containing 100 percent of Allisonapproved TES 295 fluid. For transmissions that contain a mixture of Allisonapproved TES 295 fluid and nonapproved fluids, refer to Table 2–2. NOTE: Fluid Exchanging Machines are not recommended or recognized due to variation and inconsistencies that may not guarantee removal of 100 percent of the used fluid. Table 2–2 through Table 2–3, Recommended Fluid/Filter Change Intervals, is a general guide for fluid and filter change intervals. Allison Transmission requires an initial filter change for the SpinOn Control Main Filter during the first 5000 miles (8000 km) or 200 hours, whichever comes first. Refer to the Recommended Fluid and Filter Change Intervals schedules for recommendations. The transmission sump filter is permanent and does not require replacement except at overhaul. Severe Vocations include armored car, automobile transporter, beverage delivery, food distribution, general freight, line haul, livestock hauler, moving/storage, oneway rental truck, recycling, shorthaul/LTL, and pickup and delivery. Highway Series models are also acceptable for poultrybus applications when truck chassis are utilized. General Vocations include all other vocations. Local conditions, severity of operation or duty cycle may
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