I don't like ordering stuff online. The prices on Amazon Canada are often out to lunch, plus shipping cost, etc. Etc. Again, I was hoping to learn about the different additives. I get that I can get oil online, or maybe find it here or there.
Use the 20/50 it’s has more anti wear properties, or get amazon prime for a year and free shipping. Get a pay pay account or something to ease your worries.
Rislone has a concentrate with the actual zinc additive. A bottle with a full oil change is supposed to give the full required amount of the zinc and phos. I got a couple cases of it on Amazon, best price, ship free. https://rislone.com/product/3x-concentrated-engine-oil-supplement-with-zinc-treatment-4405/
There is nothing wrong with GM EOS if you can find it. They used to recommend it with each oil change (long time ago). With ZDDP restrictions due to emissions, they now only recommend it for break in.
Try to go to a few parts stores like Napa/Autozone/CarQuest or whatever is around your area, heck even Can Tire/WalMart, ask them if they deal with Valvoline direct, if so, give them the part # 822388, unit #VV205, that is for a case of 6 litres of the VR1 10/30. Parts guys love part #'s, they may find it easier for you that way.
I had a friend run that in a brand new stepside chevy back in the day. 18months later the engine gave up. He drained the oil and pulled the engine. I was watching him do it. It had 2” of graphite that settled out of the oil and basically plugged up the pickup starving the bearings. I’m amazed they never were sued publicly for that crap.
My engine builder said a ZDDP additive was fine but he (nor I) is not a chemist (I have a flat tappet cam). You'll probably be fine with using the ZDDP additive, but I recommend leaving it to the chemists and going with the Valvoline VR1 racing oil. That's what I use (10W-30).
