Castrol EDGE 5W-30 Advanced Full Synthetic Motor Oil, 5 Quarts, Eco Pack

Quality synthetic. Keeps a 36 year old small block protected, smooth, powerful and quiet. Price is right!

good quality, good value

I've been using Castrol lubricants for over 60 years going back to the days they were known for their outstanding 2-cycle oils. I still rely on their EDGE and GTX synthetic oils for my modern vehicles. This price is better than I can get in the local big box store.

I ONLY use Castrol, and have for years. It's the brand I trust. Good price too

I've delayed reviewing this oil because it takes months or more to be able to say anything worth saying about a motor oil. What I can say about this one is that it definitely reduces carbon buildup on the intake valves of my car's GDI engine. What it all comes down to in a nutshell is that GDI engines don't get the fuel wash effect of gasoline passing over the intake valves like carbureted and port fuel-injected engines do. That means that the hydrocarbon vapors coming from the PCV systems form deposits on the intake valves that never get washed off. Oils like this one are engineered to be less volatile at operating temperatures, which reduces the vapors coming through the PCV system. One of the ways I know this oil is producing less vapor is that the oil level hasn't budged since the last time I checked it. I never considered my car to be an "oil burner;" but this time around, after two oil changes using this oil (with induction system cleanings before each oil change), there's no measurable loss at all. No loss of oil in the crankcase means little or no loss to vapor in the PCV system, which in turn means little or no buildup on the valves. If your car has a GDI or T/GDI engine, therefore, I can recommend this oil as a good choice. There are others, of course; but this is the one we're talking about now, and it's a good one. Richard EDIT: I'm updating this review with borescope video of the head under the valve cover. What I was looking for sludge to decide if it was time for a flush after 50K miles. No flush needed. In fact, I was pretty amazed at how clean it was under there. So not only does this oil reduce carbon in the induction system, but it has excellent detergency as well.

The oil is good, so that's the most important thing. The packaging is thoughtful, and I ordered this to be environmental friendly... it's basically a bag of oil packaged in a box. Not as convenient as the plastic bottle, but I guess that's the environmental tradeoff. I also write how many ounces I use on top of the box so I know how much is left (there's no way to tell in the bag).

very good oil, I always use the brand for all my cars.

Best oil for the money I love it