The topic of the thread is whether a member can use 50% used motor oil without harm to the engine.

Again, discussions regarding whether the cost of fuel is too high or too low are off topic.

Discussions regarding the ignorance of a specific member are in violation of the forum rules.

If you can't seem to have a discussion with a specific individual due to their inability to see the opinions of others, then simply put them on ignore. If you are unsure of how to accomplish this, please contact me via PM.