Where are you located at? What is the maximum expected ambient temperature and minimum expected ambient temperature that you will be starting and operating? Philip.
(to the original poster, it's been talked about several times... and I'm sure several dozen more times!!! I use Shell Rotella.)
I see that you've asked this same question is 2 other threads... You should only ask it once, and never in someone's else thread since that would be considered trying to "hijack" their post. You'll get the hang of it soon enough :thumbsup: