Driven Racing OilHR1 Conventional 15w-50 Engine Oil - Formulated for Classic and Racing Applications. Ideal for Long Stroke and/or high Compression Engines. (12 Quarts)

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

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.

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.

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.

Got what I wanted

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

I like the additional zinc and additives for my old 426 Hemi.

great oil for my car been using for years now