Chevrolet SUBURBAN 1993 Owner's Manual page 295

Service & Appearance Care
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K2694
What to Add:
Refer to the Maintenance Schedule to determine what kind of fluid to use.
See "Recommended Fluids and Lubricants" in the Index.
NOTICE
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When adding power steering fluid or making a complete fluid change,
always use the proper fluid. Failure to use the proper fluid can cause
leaks and damage hoses and seals.
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