Would the HPR30 reduce the flow to a dangerous level in a red 308?
I tried searching oil tests on a 308 however my search came up empty. With the oil issues 308's have prior to mods surely sometime in the past different oils have been tested to determine which is the best for a 308?
no it wont....the HPR30 was designed for the big bore 6's and v8's its still a mineral based oil which i prefer over full synthetics unless a all out race engine
Castrol do an EDGE 25w 60 also very good for the 'ol 'oldens 308's 350's 351's etc...if the oil is too thin for the app it will flow through the bearing too fast not giving it a chance to take heat away from the bearing
with old school type engines with bigger clearances(308) or high milage ones you need a thicker oil to act as a barrier against wear ..but also the oil is flowing slower through bearing to capture as much heat as possible
Holden specified 20w 50 i think right up till the end before they changed to LS Chev power
Edited by Mint Julip, 02 April 2014 - 06:58 PM.