I would take another approach, and this is if I wanted to do this BG 109 EPR, and this is from what I have seen others do.
1) Go out and get the cheapest 10W-30 oil or 10W-40, hey even 15W-40, also get a new oil filter.
2) Take your car out for a drive and come back and change your oil and oil filter.
3) Put in your cheap oil of your choice and after the engine has gotten hot, add your BG109 EPR
4) Run it for 20 minutes at 2000 rpms and then change your oil.
Why am I saying to use new oil and a new oil filter, you can see if this product really works, and I think this product works better with new oil versus old oil. All the naysayers that say this BG 109 EPR does not work, change your oil, and with new oil run it for 20 minutes at 2000 rpms and then drain the oil and see what it looks like. Then get some new oil and add this BG 109 EPR and run it for 20 minutes, and drain the oil and see what it looks like.