Originally Posted by lawnguy
Originally Posted by SubieRubyRoo
Lubegard BioTech, same as their Heavy Duty Engine Protectant other than bottle size. Not all the time, but I usually keep a quart on the shelf. I had a fairly informative discussion with a Lubegard exec and posted them on the board, along with a VOA of it. Good stuff.
Can you just add this to your oil by itself,or do you have replace it with oil?
I'm not sure what you mean but: Add it to your oil when you change it, don't overfill the sump. So if your car takes 5 quarts of oil add 4.5 quarts and one 15 ounce bottle, you will be GTG. If you're working from a quart bottle of Bio-EP, add half a quart, you'll get 2 OCI's worth from a quart. HTH