engine fan fluid is out what kind of fluid do I use
From that link looks like Dex/Merc.
Consider converting to electric instead? .....http://www.clublexus.com/forums/performance-and-maintenance/196064-sc400-hydraulic-fan-conversion.html
Looking for a Used SC 400 in your area?
CarGurus has 71 nationwide SC 400 listings and the tools to find you a great deal.
Search Lexus SC 400 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Lexus SC 400 Experts