2004-2005 Honda TRX450R Factory Sevice Manual, Page 61Get this manual
MAINTE NAN CE
RAD IATOR COOLANT
Check th coo lont le vel of he re,e rvean ith he ngine ru nn ing 01 normal pcat ing 10m pctu ceThe le ve hould be be'ween th "UP PER" andLOW ER" le vel linewilh th ve icle prig ht on" leve surface
If the leve IS lowromovo th top cover Ipa 3-4) nd re se rve ta nk cap, nd fill the la nk up to th UPPER" le ve line wit ':mix' re 01 wate nMreee Icoolant pre parat io n, page 7-61 ,
RECOMM EN DED ANnFREEZE, Pro Ho nd HP coo la nl on igh qu ol Ity O'thyl""c co" ;n;ngiliea "'free corrosio inh ibitor