Hydrocracking
Post Fiend
Joined: Feb 2004
Posts: 5,378
Likes: 3
From: nebraska
I am afraid your wrong. Oil is not oil. There are differences. The refining process is not the same on all oils. Oils can meet the minimum specs on the letter ratings on the can so that doesnt tell you much. Like I said oil analysis. That will show you how your oil is doing. I could show you right away the differences in oil comparisons in your engine with this technique. Been there done that. It would be nice to believe the cheapest is alright but it isnt. Some oils will hold up an some will not. I use oil analysis an you would be amazed athj the differences in motor oil. Some will show high wear metals an some will some will show low wear metals under similar conditions. If you want to buy the cheapest thats fine. I like to buy the cheapest oil with the highest quality but I usually have to pay more to get it. Use oil analysis on your current oil change in your vehicle. Make sure that oil is doing its job. Otherwise its just guuess work. How do you know?
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally Posted by 150ford
I am afraid your wrong. Oil is not oil. There are difference.
Seriously, yes, I agree and have never said that Wally oil is the same as M1. But any oil meeting the minimum API rating (currently SM) is good enough to get 100s of 1,000s of miles out of your engine.
As I have posted before, GM tests the durability of its truck engines by simulating 200,000 miles of heavy loaded use, using the oil recommended in the owners manual and changing oil per the GMOLS. No exotic oils. No 3000 OCI.
So, 99.9% of the public will be just fine putting any SL/SM-rated oil in their engine. That's what the API rating are for:
Just remember the immortal words of Ron Popeil:
"Set it and Forget it".
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