Castrol Classic XL 20w/50
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About the Product
Castrol Classic XL 20w/50 is a premium multigrade engine oil of good all round performance. Formulated with high quality mineral oils, plus carefully selected additives, it is ideally suited to older technology and classic car engines.
•For pre-1980 classic cars and motorcycles
•A conventional 20W-50 multigrade engine oil
•Formulated with high quality mineral oils plus selected additives
•Ideally suited to classic car engines and many transmissions (ie. Austin Healey 3000)
•Offers excellent oil consumption and a very high level of engine wear protection
- ZDDP (Zinc) levels are 800-1000ppm. Zinc is corrosive and high levels will cause wear to cams etc. It can also cause problems in vehicles that are in storage as it makes the oil acidic.
- The reason Zinc levels got VERY high for a period of time was to counter the effect of lead scavengers which reduced its effectiveness, but there is no lead in petrol now and hence no scavenger additive – this is why some people still associate with very high Zinc being ‘right’ for classic cars.
- GM experimented with levels in the 1950’s and found 800-1000ppm was optimum for wear protection. They also tested down to 600ppm in the ‘70s and found no wear issues.
- This oil at 800-1000ppm is also suitable for cars with catalytic converters
Vintage Tin
Available sizes: 1 Liter (1.05 quarts)
5 Liters (5.28 quarts), and
20 Liters (21.13 quarts)
55 gallon drums available for Repair and Restoration shops
- Accepting Pre-Orders. Shipping in April 2025.
How many liters of motor oil does my classic need?
Engine and Transmission Oil Type & Quantity Chart (hyperlink)
The above hyperlink will give you quantity in pints (don't ask me why). To convert to liters, take the pint quantity and divide by 1.76 for approximate liters
Pints / 1.76 = Liters
Want more information? Click on the links below:
Why use Specialty Oils in your Classic Car?
A Deep Dive into the right oil for YOUR car.
