Kroon Oil Classic Multigrade 20W-50

Mineral 20W-50 multigrade engine oil for classic petrol and diesel engines

Kroon-Oil Classic Multigrade 20W-50 is a mineral SAE 20W-50 engine oil for classic petrol and diesel engines in passenger cars and light vans.

It is available as a 1 L tin, a 5 L pack and a 60 L drum.

Key properties

• Grade: SAE 20W-50, mineral base oil
• Listed: API SF/CC, CCMC G2/D1, Ford M2C153-C and M2C9011-A, GM 6041M / 6085M / 6136M
• Viscosity: 136 mm²/s at 40 °C, 17.6 mm²/s at 100 °C, viscosity index 143
• HTHS 4.56 mPa.s, Noack 7.5%, cold viscosity 3,900 mPa.s at -15 °C
• Total base number 3.5 mg KOH/g, sulphated ash 0.86%
• Flash point (COC) 244 °C, pour point -30 °C

Choosing the right oil

20W-50 is the classic-car default for many British and European engines of the 1960s and 1970s, which is why this grade tends to be the one people stock up on. It is a good fit when the handbook says 20W-50 or when an older engine runs hot and loses pressure on a thinner oil.

If you are choosing between this and the other 20W-50 classic oils, the difference is in what each one is for: this is a straightforward mineral multigrade for everyday classic use, while the Millers Classic Sport oils are semi-synthetic and the Kroon-Oil Classic Racing Oil is aimed at high-output engines.

The 5 L pack covers a typical full oil change on many classic engines; the 60 L drum is for clubs and workshops.