Red Line15404 SAE 5W40 Fully Synthetic Motor Oil - 1 Quart

After a little reading I found this oil to be the best. It is a little pricey compared to others out there, but it is an actual full synthetic. I would also recommend this oil if you have a turbo car, it is easier on the turbo.

I've used redline products for the past 15 years and my bill is about 1 grand a year to keep my cars and trucks filled with their products. Previously I've put the 15-40 in my diesel truck and car, but the 5-40 looks to have even better specs and I will now switch over to the 5-40 for my diesel engines. In colder climates, this oil should be easier on the starter (which I broke on my truck)

After some extended research, I came to the conclusion that this Benicia, CA -based oil is the only synthetic oil that is available for purchasing in the US of A. Almost all other "synthetic" oil, even the German-made Pentosin, is actually dino oil that's claimed to be synthetic due to no regulation.Very nice that it is now available for purchasing directly from Amazon.com for a competitive price, ships fast!Runs great in a Volkswagen Jetta 2.5L petrol engine.

Love this oil. It is a little expensive but well worth the money. I use all Redline lubricants for my car and it works very well.

Used in my 2008 Porsche Cayenne V8. Could not tell the difference from Mobil 1 or MPT.Subsequently tried a German brand full synthetic motor oil which I preferred.

I have been trying for a year to get this specific brand of oil. I live in a small Alaska community only reached by air or boat. Yippee I finally got it.

Have used this in my 2004 Jetta TDI for the last 120K miles, excellent oil sample reports. Can't beat this for extreme duty!

Good price, awesome oil for my Jdm motor swapped wrx.