Bulwell, Nottingham Mon–Fri 9–5:30, Sat 9–1 Next-day delivery order by 1pm

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Next-day UK delivery on car parts, tools & accessories — order by 1pm Mon–Fri, £3.99 on most orders. Next-day UK delivery — order by 1pm. Order by 1pm Monday and it’s with you on Tuesday. Or Click & Collect free from Bulwell.

Castrol Classic Ep90 Gear Oil – 1 Litre (1840B)

£22.49 inc. VAT

Out of stock

Out of stock right now. We can usually order it in for the next working day — ring 0115 927 3651 or WhatsApp us with the part number CAS-1840B and we’ll confirm price and day.
  • Castrol Classic EP90, 1 litre
  • API GL-4
  • Not for limited-slip axles
Next-day UK delivery £3.99 (order by 1pm Mon–Fri), or free click & collect from our Bulwell shop — 2–4 Carey Road, NG6 8AT. Choose collection at checkout, then pick it up any time in opening hours (Mon–Fri 9–5:30, Sat 9–1) — just quote your order number.
Next-day UK delivery £3.99 (order by 1pm Mon–Fri). Home delivery only: click & collect isn’t available for this item. With items from our shop in the same order, delivery is £5.99 (two parcels).
SKU: CAS-1840B Category: Brand:

Description

Genuine Castrol Classic · Part no. 1840B

Castrol Classic EP90 is a straight SAE 90 extreme-pressure gear oil to API GL-4, in a 1 litre bottle. It is for gearboxes and final drives that ask for a GL-4 oil: spiral bevel final drives, mild hypoid axles, and spur and helical gears. It is not for high-offset hypoid axles that need GL-5, or for limited-slip differentials.

Good to know

  • Will it suit my car? Check the handbook for an SAE 90 or EP90 oil to API GL-4; if it asks for GL-5 in the rear axle, or for a limited-slip oil, this is the wrong one for that job.
  • What does EP mean? Extreme pressure: the additive that protects heavily loaded gear teeth. This oil is pitched at GL-4 strength, not the stronger GL-5 level used in high-offset hypoid axles.
  • Is a straight 90 the same as a multigrade? No; a multigrade with a W figure is also rated for cold flow, so use the grade the handbook names unless the vehicle maker allows a swap.

Which one?

For a limited-slip axle, Apec's 80W90 LS (A3365L) is made for that job; for a multigrade GL-4 gear oil in 5 litres, see Comma EP80W-90 GL-4 (GO45L), and for GL-5 hypoid axles, Comma EP80W-90 GL-5 (EP80905L).

Key features

  • Straight SAE 90 EP gear oil, 1 litre
  • API GL-4
  • Spiral bevel final drives and mild hypoid axles
  • Spur and helical gears
  • Not for GL-5 hypoid or limited-slip axles

Specification

Brand Castrol Classic
Part number 1840B
Barcode (EAN) 5060391200187
Weight 1.02 kg
Packed size 60 x 115 x 185 mm
Specifications
Detail API; GL4
Viscosity SAE 90
Volume 1 litre

Additional information

Weight 1.02 kg
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