AMSOIL Z-ROD® 20W-50 Synthetic Motor Oil
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Z-ROD® 20W-50 Synthetic Motor OilHelp

Modern Technology For Classic Cars

Z-ROD® 20W-50 Synthetic Motor Oil Product Image
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$12.05 Retail Price (USD)
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Product Code: ZRFQT-EA
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AMSOIL Z-ROD Synthetic Motor Oil is specially engineered for classic and high-performance vehicles. 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.

AMSOIL Z-ROD Synthetic Motor Oil is specially engineered for classic and high-performance vehicles. 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.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, the First in Synthetics®, to do the best job protecting your engine.

Protects Flat-Tappet Cams
The lifters and cam lobes on flat-tappet camshafts common to classic and high performance vehicles 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. 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 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
Rust 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.

APPLICATIONS
AMSOIL Z-ROD Synthetic Motor Oil is recommended for older or modified 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 anti-wear additives. ZDDP levels in Z-ROD Synthetic Motor Oil exceed the limits of API SM and newer specifications.

COMPATIBILITY
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 Oils.

SERVICE LIFE
Because engines in classic cars, hot rods and other performance vehicles are generally modified, a universal oil drain interval recommendation for these applications cannot be given. Responsibility for determining the drain interval duration rests with the owner. As a general service guideline, the maximum drain interval for Z-ROD Synthetic Motor Oil should not exceed 5,000 miles or one year, whichever comes first. In heavily modified engines (e.g. forced induction, nitrous) the maximum drain interval should not exceed 3,000 miles or one year, whichever comes first.

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available via the Internet at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don’t pollute. Return used oil to collection centers.

For warranty information, visit www.amsoil.com/warranty.aspx.

ZRF Package Sizes
Code Package Size Unit of Measure Product
ZRFQT (ZRFQT-EA) Quart Each Z-ROD® 20W-50 Synthetic Motor Oil
ZRFQT (ZRFQT-CA) Quart Case of 12 Z-ROD® 20W-50 Synthetic Motor Oil
More about AMSOIL Reviews

REVIEW SNAPSHOT®

by PowerReviews
AMSOILDOMINATOR 10W-30 Racing Oil
 
4.9

(based on 55 reviews)

Ratings Distribution

  • 5 Stars

     

    (52)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

98%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Z-ROD oil

I switched to ZROD oil for my vintage gto mainly for the zinc/phosphorus content. when I did I changed from a competitors 10w40 to amsoil 20w50 because of oil usage (believed to be...Read complete review

I switched to ZROD oil for my vintage gto mainly for the zinc/phosphorus content. when I did I changed from a competitors 10w40 to amsoil 20w50 because of oil usage (believed to be valve seal related) and oil consumption decreased significantly.

VS

Most Liked Negative Review

 

I would not buy this product again

They say it's designed for older engines but it's not. Once your engine is at operating temperature the oil pressure drops below 10psi at idle because the oil is just too thin.

They say it's designed for older engines but it's not. Once your engine is at operating temperature the oil pressure drops below 10psi at idle because the oil is just too thin.

Reviewed by 55 customers

Displaying reviews 1-10

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5.0

The only oil I use

By 

from Seattle

Verified Buyer

Comments about DOMINATOR 10W-30 Racing Oil:

It's an all around solid oil, useable for any occasion for my 481whp awd rally car.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Mitsubishi lancer Evo x
 
5.0

Saves the Cam

By 

from Oceanside, CA

Verified Buyer

Comments about Z-ROD 10W-30 Synthetic Motor Oil:

I drive a '93 Bronco with after market heads, lifters, and camshaft. With the increased pressure on the lifters from the stronger valve springs and bigger cam. I was wearing out camshafts every 3 years or so. Since I discovered AMSOIL and their Z-Rod oil, I haven't had to replace a single cam. I've had my used Z-Rod oil analyzed after 3000 miles and there were no traces of metal from my camshaft. Great oil for flat tappet lifters.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 1993 Ford Bronco

(0 of 1 customers found this review helpful)

 
5.0

Great Motor Oil

By 

from NC

Verified Buyer

Comments about Z-ROD 20W-50 Synthetic Motor Oil:

I use the ZRod in my VW Super Beetle with it's Flat Four brand new engine. Excellent lubricant with Zinc additive for breaking in the valve

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Classic VW's

(1 of 1 customers found this review helpful)

 
5.0

Absolutely

By 

from Seville Ohio

Verified Buyer

Comments about DOMINATOR 5W-20 Racing Oil:

I'm a Ford fanatic and have built and Worked on 302s, both 351s, 4.6 DOHC and 4.6 PI , 4.6 3 Valve, 5.0s 5.8s 4, Valve as well as FE plus 385 series. I was using Royal Purple until it thinned out in my Coyote ! I just spend too much money along with a lot of time, effort and energy to use oil that going to cause me issues and premature failure! Tony Bogus!!!

  • How would you describe yourself?:
  • I'm a professional mechanic
  • What kind of vehicle/equipment do you have?:
  • Currently a 72 Maverick with a 418
 
4.0

Good product, I will buy more.

By 

from Grants Pass, Or.

Verified Buyer

Comments about Z-ROD 10W-30 Synthetic Motor Oil:

I use this product in my custom cars. It is good for cars that are not driven daily. Very quick shipping to my home.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Most of my vehicles are 1950's & 1960's.
 
5.0

American made quality

By 

from Florida

Verified Buyer

Comments about DOMINATOR 5W-20 Racing Oil:

Americans have been harnessing and producing horsepower since the early 1900's, so who better to provide quality that protects our investments. I love pushing the envelope of power and Amesoil Company has proven themselves to provide oil and other products that keep me enjoying my rides. And still Making America Great!!

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Motorcycles, trucks and cars

(1 of 1 customers found this review helpful)

 
5.0

Service

By 

from everett.wa.

Verified Buyer

Comments about DOMINATOR 5W-20 Racing Oil:

clean longer,better oil pressure,runs cooler.

  • How would you describe yourself?:
  • I'm a full-on gearhead

(1 of 2 customers found this review helpful)

 
5.0

Great Oil

By 

from Deep south

Verified Buyer

Comments about Z-ROD 20W-50 Synthetic Motor Oil:

Just what I need for my old school VW!

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 1971 Super Beetle

(1 of 1 customers found this review helpful)

 
5.0

Would buy avAi

By 

from Ohio

Verified Buyer

Comments about DOMINATOR 10W-30 Racing Oil:

In race car

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Red. Dragster

(0 of 1 customers found this review helpful)

 
5.0

oil

By 

from canastota ny

Verified Buyer

Comments about Z-ROD 10W-30 Synthetic Motor Oil:

good prduct

  • How would you describe yourself?:
  • I love my vehicles / toys

Displaying reviews 1-10

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