I have been using Blackstone Lab for oil analysis for a regular car. However, blackstone seems to have a bad rep on this forum, so I figure I can try a different lab. Polaris Lab seems to have a good rep here, but the site is super confusing. I can't figure out what to do. I guess Blackstone typically send out kits for free and then you mail it in. I am not sure how Polaris works?
Are there other labs I should look into.
Are there other labs I should look into.