5w30

I just got my oil changed and swtiched to 5w30 oil (Penzoil Ultra Platinum). I noticed my gas mileage went down from when I was using 5w20. What MPG are you guys getting for those of you using 5w30?

I’ve seen a lot of threads on people with mustangs deciding on what to use and I see most people agree on 5w30. That being said most of those posts are from people that own a 2018+. I’m just curious what people with the Gen2 motor are running and if I should stick with 5w30. I don’t redline my...

Just got my oil changed and that tick is making me tick, so I'm thinking of throwing in a bottle of Ceratec. Do you guys use the full 10 quarts of oil and just dump the Ceratec in, or do you use less oil? Any risk of overfilling? Side note: Been toying with the idea of 5w30 on the next oil...

It's now apparently spec'd for 5w30 and has a smaller sump. It also is coming with my favorite (sarcasm) piece of tech, cylinder deactivation. I haven't seen this posted yet so I apologize if it has been. Here's a link to where I saw it, which has a link to the spec sheet...