What oil
Tuned
Joined: Jun 2013
Posts: 301
Likes: 13
From: Arkansas
Seems like a lot of guys run Shell Rotella 5W-40 synthetic. I've been using Mobil 1 5W-40 Diesel synthetic but I don't have any evidence that my engine can tell the difference between it and say Shell Rotella 15W-40 conventional oil.
Really just personal preference. I like to think that the extra money for the more highly refined base stock and additive package in a synthetic oil is worth it, but again, no real evidence that it is.
As for what the previous owner used, nothing bad happens if he was using conventional and you switch to synthetic, or vice-versa.
Really just personal preference. I like to think that the extra money for the more highly refined base stock and additive package in a synthetic oil is worth it, but again, no real evidence that it is.
As for what the previous owner used, nothing bad happens if he was using conventional and you switch to synthetic, or vice-versa.
Laughing Gas
Joined: Feb 2014
Posts: 774
Likes: 25
From: Reno, Nevada
I've been doing some studying since I made the post above and it may have been true years ago that switching to synthetic oil might have caused leaks. Today the term "synthetic oil" isn't much more than a marketing term. The additive packages aren't much different between synthetic and conventional oil. With the exception of a few more expensive what are called Group IV synthetic oils, the base stock in most synthetic oil is a little bit more refined than conventional oil, but it's still petroleum oil based and there's nothing to it that will leak where a conventional oil won't.
Hope we aren't starting one of those endless internet oil threads!
Hope we aren't starting one of those endless internet oil threads!
Tuned
Joined: Jun 2013
Posts: 301
Likes: 13
From: Arkansas
I've been doing some studying since I made the post above and it may have been true years ago that switching to synthetic oil might have caused leaks. Today the term "synthetic oil" isn't much more than a marketing term. The additive packages aren't much different between synthetic and conventional oil. With the exception of a few more expensive what are called Group IV synthetic oils, the base stock in most synthetic oil is a little bit more refined than conventional oil, but it's still petroleum oil based and there's nothing to it that will leak where a conventional oil won't.
Hope we aren't starting one of those endless internet oil threads!
Hope we aren't starting one of those endless internet oil threads!
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