Tiffin Motorhomes PowerGlide 2019, Owner'S Manual

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S C H E D U L E D M A I N T E N A N C E
5-7
Differential Oil
The differential in your coach was factory filled with Shell Spirax 75W-90 full synthetic lubricant. The fluid
level should be checked every 10K miles. If make-up oil is required use only full synthetic 75W-90 lubricants.
Never mix mineral oils with synthetic lubricants.
The differential oil should be changed every 3 years or 50,000 miles, whichever occurs first.
Transmission Fluid
The transmission in your coach was factory filled with Shell Spirax S6 A295 synthetic fluid. Spirax S6 A295 is
an Allison approved TES-295 fluid. Allison approved TES-295 fluids extend both the service intervals, and the
warranty for your transmission. Continued use of TES-295 fluid provides extended warranty coverage up to 5
years or 200,000 miles whichever occurs first.
Transmission fluid should be checked on a regular basis. It is recommended to check fluid at the end of the
day when the transmission is at full operating temperature. Fluid should be checked with the park brake set,
the engine running at idle, the transmission in neutral, and the transmission temperature above 140°F.
Transmissions do not consume fluid. If you find the need to regularly add fluid to your transmission a leak has
developed and you should seek service from an Allison authorized dealer as soon as possible.
Change the transmission fluid and filter when indicated by the illumination of the transmission “wrench icon”
on the shift selector, or every 5 years, whichever occurs first.
Please refer to your Allison Transmission Operators Manual for additional information on transmission fluids,
and other transmission maintenance.