73-87 Chevy _ GMC Trucks > Power Windows & Door Locks

Roller Grease (Grease compatibility?)

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IdahoMan:
Quick question.

I'm following the bd's instruction to help with my sluggish power door windows.

-What type of grease was used on these truck's windows?
-Is there a method of determining an unknown grease type?

I have a canister of Super Lube Synthetic and a tube of Marine Grease (Calcium Sulfonate). Want to make sure whatever I use is compatible.

PS: Is there a test one can do to determine if two unknown greases are compatible?

Thank you,
IM

bd:
Use a lithium base grease such as Sta-Lube General Purpose (greenish brown), Sta-Lube Sta-Plex (red), or Lubriplate Type A (white).  Super Lube Synthetic (clear) will work, too, but may need to be reapplied more frequently than the lithium base greases.  Generally, I do not recommend mixing greases that are known to be different.  Specifically, don't mix lithium base and calcium base greases - results can vary but often cause unpredictable changes in viscosity, lubricity and sometimes causes caking.  That said, the Sta-Lube General Purpose grease is probably most like the factory grease used during assembly.

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