According to the label they have the same chemical compounds so it appears that the only difference is the $2.00 more a can the Chain-saver costs. Sounds like marketing at work again.
Also for those that are looking for some as of 9am today> 6 cans on the shelf @ Lowes brampton (Steeles Kennedy) and 1 Can of Chain-Saver.
The Chain Saver is thicker than the Multi-Use