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Demon Tweeks£13.50Visit shop Driven Racing Oil HR-1 15W50 Engine Oil - 1 US Qt (0.946 UK Litre)
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This 15W50 mineral engine oil from Driven Racing Oil (HR-1) is designed for older pushrod (OHV) engines, offering enhanced camshaft protection and rust/corrosion resistance during storage. It's an excellent choice for classic cars not used daily, supercharged, big block, or engines with looser clearances, providing robust protection for long stroke and high compression setups.
| Model Part Number | HR11L |
|---|---|
| Brand | Driven Racing Oil |
HR-1 15W50 is specifically formulated for older style pushrod (OHV) engines, including classic cars, big block engines, and those with looser clearances or high compression ratios. It offers enhanced protection for camshafts and during storage.
Yes, HR-1 includes additives designed to protect against rust and corrosion, making it ideal for classic cars or other vehicles that are not used as daily drivers and may be stored for extended periods.
This oil is not recommended for most modern engines, which often have different requirements, tighter tolerances, and advanced emissions systems. It is specifically designed for older OHV engine architectures.
15W50 refers to the oil's viscosity rating. '15W' indicates its performance in cold temperatures (Winter), and '50' indicates its viscosity at operating temperature. This viscosity is generally suitable for performance and classic engines in a wide range of temperatures.
HR-1 is developed with increased protection for camshafts, implying a formulation suitable for engines with flat tappet camshafts, which often require higher levels of ZDDP (Zinc Dialkyldithiophosphate). Always verify with engine builder recommendations if concerned.
For classic or performance engines, it's often recommended to change the oil and filter more frequently than in daily drivers. Consult your vehicle's service manual or a specialist for specific intervals based on your engine's use and condition.
Verify oil level is correct and that the viscosity (15W50) is appropriate for the engine and ambient temperature. Consult a mechanic if noise persists.
While HR-1 is designed for older engines, persistent leaks could indicate aging seals. Ensure correct oil filter is used and tightened properly. Seek professional inspection if leaks are significant.
This can be normal as the detergents in the oil begin to clean the engine internals. However, if the oil becomes excessively dark or sludgy quickly, it may indicate underlying engine issues.
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