A friend asks you for help in selecting an oil for their car. It's a regular car, so options are easy, but they don't want a list or a fine print spec to chase, just an oil to buy. Keep it simple and help them out. What oil do you recommend ? I usually suggest Castrol Magnatec in the appropriate grade & spec. It's easy to find and reasonably priced. I want it to do a good job, but not waste their money. I want them to be able to just walk in and grab it. What oil do you recommend to friends and family who don't know oil and don't want to learn about oil?