Driven Racing Oil HR1 Conventional 15w-50 Engine Oil - Formulated for Classic and Racing applications. Ideal for long stroke and/or high compression engines. (6 Quarts)

First of all I was impressed that despite my ordering this oil on December 24, it was delivered three days later. Way to go Driven and FedEx.Besides the quick shipping I believe this is the best choice for my circumstances. Here's why.LN Engineering LLC is a developer of super high quality engine upgrade parts for Porsche engines and was involved in the development and testing of certain Joe Gibbs and now Driven motor oils. Charles Navarro, President of LN Engineering LLC, states that based on years of working closely with Driven he recommends their oils for air-cooled Porsche and VW engines. For a conventional oil, he recommends HR1. For semi-syn, GP-1 and for full synthetic, DT50. You can find more on LN Engineering's website.I just completed a rebuild of my 1974 Porsche 914 type 4 engine and hope to keep it alive for a long time. Based on Mr. Navarro's recommendation I got a case of this HR1. I went with the conventional oil because I don't run that many miles between oil changes. If I was going 3,000 miles plus on an oil fill it might be worth it to go with the much more costly full synthetic DT50.

Has ordered

Switched to Driven oil after some conversations with fellow racers and having torn down the 2.0 Ford Zetec where I used M One oil and had fairly significant scoring especially in cam bores. Same engine in a friend's car had more races on it than mine and SIGNIFICANTLY less visible wear anywhere in the engine. So far, no issues in the switch to Driven - give them a call and discuss. Great racing oil from what I have seen

Studebaker cars are known to leak. I started using this and all oil leaks stopped. It also makes the engine run better and more quiet than VR1. I've tried all kinds of oil and this is the best for flat tappet engines.

Great product giving my high performace truck engine the right lubrication is key!!

Recommended by my truck engine builder in order to get a warranty on my engine.

Rating motor oils tends to be similar to picking the "best" beer depends on personal task ! In any case I have tried many different oils for my collector autos and have been very happy with the Driven oil HR-1. Never experienced any issues or problems - worthy of a try if you have a older collector car.

Been using for a few years in two of my vehicles with flat tappet cams one of them has a very aggressive cam oil has done the job