Amsoil Z-ROD 10W-30 Synthetic Motor Oil, QUART, ZRTQT-EA is one of the finest engine oils you can use for our Flat Tappet aircooled VW engines. This oil was designed from the beginning to provide flat tappet protection for our 1930s designed engines! We recommend 10-30 in most every case, since oil pressures over 45psi will cause the engine to bypass the stock oil cooler! If you have a 26mm or 30mm oil pump, or cruise at higher than normal speeds, we recommend you check your hot oil PRESSURES to make sure you are not exceeding 45psi, which will bypass the cooler and cause oil temperatures to skyrocket. This product can ONLY ship via Ground (UPS Ground, USPS Parcel Post, etc)!
AMSOIL Z-ROD™ Synthetic Motor Oil is specially engineered for classic and high-performance vehicles, and in our case that means our Vintage (Stock), and High Performance Aircooled VW and Porsches! It features a high-zinc formulation to prevent wear on flat-tappet camshafts and other critical engine components, along with a proprietary blend of rust and corrosion inhibitors for added protection during long-term storage. Z-ROD Synthetic Motor Oil is designed to perform on the street and protect during storage. Typically, the lifters and cam lobes on flat-tappet camshafts common to VWs, especially the high performance ones with heavier than stock valve spring pressures, slide rapidly against one another, producing high friction and heat. The friction between the two components can eventually wear down the cam and affect valve operation, ultimately resulting in lost engine power and reduced efficiency (OR ENGINE DISASTER!)
In addition, these areas are splash-lubricated rather than pressure lubricated like other areas of the engine, which adds extra strain on anti-wear additives like the zinc and phosphorus in zinc dialkyldithiophosphate (ZDDP).
AMSOIL Z-ROD Synthetic Motor Oil is formulated with super-high levels of ZDDP to protect flat-tappet cams, lifters, rockers and other areas susceptible to wear. Its high-zinc, high-phosphorus formulation provides the extra wear protection these critical splash-lubricated components require.
Provides Long-Term Protection from Rust & Corrosion
AMSOIL Z-ROD Synthetic Motor Oil is formulated with a unique blend of rust and
corrosion inhibitors to ensure maximum protection during long-term storage. To prove
its effectiveness, AMSOIL submitted Z-ROD Synthetic Motor Oil to the Standard Test
Method for Rust Protection in the Humidity Cabinet (ASTM D-1748). This test evaluates
the rust-preventative properties of oil under high-humidity conditions, similar to those
faced by a covered hot rod in a damp garage. The metal coupon treated with AMSOIL
Z-ROD Synthetic Motor Oil showed no signs of oxidation after 192 hours, while the
coupon treated with a leading competitor’s product failed the test after 24 hours.
AMSOIL Z-ROD Synthetic Motor Oil is
recommended for older
or modified engines (which is our Beloved Aircooled VW and Porsche Engines) requiring either
10W-30 or 20W-50 motor
oil. Z-ROD Synthetic Motor Oil meets API
SL and earlier specifications, allowing for increased levels of
ZDDP levels in Z-ROD Synthetic Motor Oil
exceed the limits of
API SM and newer specifications.
AMSOIL Z-ROD Synthetic Motor Oils are compatible with
conventional and other synthetic motor oils. Mixing AMSOIL
Z-ROD Synthetic Motor Oils with other oils, however, will shorten
the oil’s life expectancy and reduce the performance benefits.
Aftermarket oil additives are not recommended for use with
AMSOIL Z-ROD Synthetic Motor Oil.