While in a waiting room I read a short but interesting article concerning an extended warranty problem submitted from a reader (this is an RV type magazine.) Long story short, it seems that many of these warranties have small print which requires that the policy holder use only their lubricants or the warranty is void. Seems the individual found this out too late and that the "required" lubricants are only available from a limited number of sellers (private labeled products and comparatively expensive.) Just another rip-off of the consumer.