was just running through the search function and came across this..
I used restore in my pre-bitog days on my ole rodeo, at that time something like 165,000 miles. It was the only additive at the time that made an IMMEDIATE DRAMATIC effect... I was trying additives to see if anything would quiet down the infamous collapsed hydrolic adjuster ticking. It DID make the engine noise free for awhile. I used it for a few changes, and the ticking returned after about 6000 miles. I think it was my pursuit of a band-aid fix that I found bitog. I ended up ARXing and switching to 0w30 GC. The tick is now a mild reasonable tapping and has been that way for a long time, no complaints...
I thought I would mention though, that I had some oil analysis done several oil changes AFTER restore had been used, and severely high amounts of LEAD and COPPER were coming up in the analysis. I did a follow-up analysis later on and the LEAD and COPPER were reduced some.. I think that stuff sticks around in there a LONG time. Blackstone Labs did the testing, and Dyson analyzed and discussed results with me... He said that Restore is full of lead and copper.
Honestly, I couldn't say whether or not "Restore" is a good things or not. I have heard enough things, and seen things with my own eyes and ears that tell me it definetely changes SOMETHING in a big way. Long term it might be horrible for engines, but maybe trying to get a last year out of an old smoker, trying to pass emissions, this might just be the trick. I don't consider Restore "Snake" oil really, because it does actually DO something, unlike so many like Slick50 that do absolutely nothing.