Originally Posted by Phishin
Originally Posted by CleverUserName
Originally Posted by Phishin
RLI 10w30HD is loaded with copper
"This is the point at which RLI began to develop alternatives suitable for vegetable oils and turned to soluble copper compounds. They discovered that several types of copper compound could be used including copper dihydrocarbyl thio- or dithio-phosphates, copper dithiocarboamates, copper sulphonates, carboxylates, and phenates. It was important that the additive should be oil soluble for the oxidation inhibition to be effective. By putting amounts from 50 to 3000 part per million (ppm) in the oil a remarkable effect was noted."
"RLI then discovered that by reducing the copper level to around 500 ppm and adding 500 ppm using a second antimony oil soluble compound, wear was brought down below that seen with sunflower oil alone. Now with only 500 ppm copper and 500 ppm antimony the oil is not only oxidation resistant, but also wear inhibiting."
Here is a link to the article:
RLI Article
Originally Posted by Phishin
Originally Posted by CleverUserName
None of the current RLI formulations contain copper any longer. That is the old formula from 10+ years ago.
The oil I have is VERY old stock. I'm not sure when it was made....but it's very old. It's in the old white 1 gallon jugs and the lab is BARELY visible.
It's all 10w30 that I bought from Amazon last year for like $25/gallon.
I'm the guy who posted the link for the 10w30 when it was clearanced by Amazon. I got a bunch of it for $16/gallon before they raised the price to $25.
The lot code on the white jugs was from 2016 stock. It's not as old as you think it is.
But does it have copper in it??
NO!!! None had any copper. My last sample was 3ppm which is a wear metal