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Z-ROD® 20W-50 Synthetic Motor OilHelp

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Z-ROD® 20W-50 Synthetic Motor Oil Product Image
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$11.60 Retail Price (USD)
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Product Code: ZRFQT-EA
Product Highlights View Full Description

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
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
AMSOILZ-ROD 20W-50 Synthetic Motor Oil
 
4.6

(based on 10 reviews)

Ratings Distribution

  • 5 Stars

     

    (8)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

90%

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 10 customers

Displaying reviews 1-10

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(1 of 1 customers found this review helpful)

 
5.0

I would and have purchased this item in the past.

By 

from Ohio

Verified Buyer

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

The oil itself appears to be living up to its standards from what I have observed. I have used it in my two GTO's and the purpose for purchasing it was due to the storage during the winter months. By using the synthetic oil I do see my 1966 GTO running somewhat cooler when running on the highway. So far I am completely satisfied with the change over to the Z-Rod Oil

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 1966 GTO, 1972 GTO & 1963 Corvair

(1 of 1 customers found this review helpful)

 
5.0

GREAT PRODUCTS!

By 

from Cumming, GA

Verified Buyer

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

I have a 1989 Toyota pickup that I have owned since new. I use only Amsoil products in my vehicles and am happy to say that the old pickup has 370,000 miles now and still runs like it did when new. Consider me a very, very happy customer!

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • pickup, Z06, Focus RS, Indian and Vulcan

(2 of 2 customers found this review helpful)

 
5.0

Z-ROD oil

By 

from texas

Verified Buyer

Comments about Z-ROD 20W-50 Synthetic Motor 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 valve seal related) and oil consumption decreased significantly.

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

(1 of 3 customers found this review helpful)

 
2.0

I would not buy this product again

By 

from Wildomar CA

Verified Buyer

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

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.

  • Was this a gift?:
  • No
  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 55 Chevy, 56 Chevy, 67 GTO,68 RoadRunner

(0 of 1 customers found this review helpful)

 
5.0

Tough oil

By 

from Lawton, Ok

Verified Buyer

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

Keeps the engine clean ands hold pressure well in bbc.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 500 hp 454 BBC

(0 of 1 customers found this review helpful)

 
4.0

Nothing much to review, I bought some oil

By 

from Mi

Verified Buyer

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

Used in a hot rod

  • How would you describe yourself?:
  • I love my vehicles / toys
 
5.0

classic car oil

By 

from grande prairie AB canada

Verified Buyer

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

purchased a few cases for my triumphs ..i've been running tr6's since the 80's in northern canada ..zrod with it's storage protection /zinc and 20/50 keeps my precision rebuilt engines in good health

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 2X 1973 tr6 741/2 tr6 76 tr6
 
5.0

Z-ROD 20w-50

By 

from Maine

Verified Buyer

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

This oil has lots of ZDDP. To protect my Cam and lifters. The 20W-50 I like because l run it in my air cooled engine. Even on a hot day with the Engine at temp of 280' I still have 30# of oil pressure. I also run Amsoil gear lube in the transaxle. I'm sold Amsoil products.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 1964 Corvair powered Dune buggy.

(1 of 1 customers found this review helpful)

 
5.0

High Zinc content

By 

from Virginia

Verified Buyer

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

Used this oil in both my classic cars and have had no problems

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 69 Chevelle SS 396 70 Chevelle SS 396
 
5.0

Longtime Amsoil User

By 

from North Carolina

Verified Buyer

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

I've driven VW Super Beetles for the last 35 years, and once the engines are broken in I've always switched over to Amsoil. And considering that I lived in the Southwest all of that time and 1st generation VW's are only cooled by Air and Oil; it made Amsoil a must. With it's ability to keep engine temps much lower and wear and tear down to a minimum it's been an easy decision.

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

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