I always have bought directly from the manufacturer from the internet and shipped to my door , The only time you buy more is for topping off after hose replacement or timing belt w/ waterpump replacement and the like service , You know it never , never boils over. Never corrodes and actually prevents detioriation of gaskets and seals - there is no water to oxidize and it actually lubricates the entire coolant system for smoother flow ++++++++ The best for mine and my wifes LEXUS , BAR NONE!!!!!!!!!!!!!!! I also run NEO synthetic oil in both cars always have and always will www.neosyntheticoil.com My fatherinlaw knows a guy who bought his 1990 ls400 new and now has over 500,000 on the vehichle , When he bought the car he took it home and dropped the oil and used neo 5w-30 only ever since [ arizona car ] I don't believe in manufacturer politics when it comes to whom they contract with for there products , I prefer to make those decisions on my own .
Thanx ,
PS. I do use toyota tranny fluids B)