Manual

23 products

Cyclon ECO R2 GEAR EP/GL-5 80W-90 - Manual Cyclon ECO R2 GEAR EP/GL-5 80W-90 Extreme pressure mineral gear oil formulated from re-refined base oils ,suitable for axles, final… Cyclon ECO R2 GEAR HD/GL-4 80W-90 - Manual Cyclon ECO R2 GEAR HD/GL-4 80W-90 High quality gear oil with selected additives for mild extreme pressure conditions. Recommended for… Cyclon EVO GEAR TDL 75W Cyclon EVO GEAR TDL 75W-90 Long-life synthetic transmission and axle oil offering ultimate protection for heavy-duty manual transmissions and… Cyclon EVO GEAR XL 75W-80 - Manual Cyclon EVO GEAR XL 75W-80 Long life, low viscosity synthetic fluid for ZF manual and automated transmissions. Produced with… Cyclon MAX GEAR EP/GL-5 80W-90 - Manual Cyclon MAX GEAR EP/GL-5 80W-90 High performance multigrade gear oils with exceptional oxidation and corrosion resistance, ensuring maximum performance… Cyclon MAX GEAR EP/GL-5 85W-140 - Manual Cyclon MAX GEAR EP/GL-5 85W-140 High performance multigrade gear oils with exceptional oxidation and corrosion resistance, ensuring maximum performance… Cyclon MAX GEAR EP/GL-5 85W-90 - Manual Cyclon MAX GEAR EP/GL-5 85W-90 High performance multigrade gear oils with exceptional oxidation and corrosion resistance, ensuring maximum performance… Cyclon MAX GEAR HD/GL-4 140 - Manual Cyclon MAX GEAR HD/GL-4 140 High quality gear oil with selected additives for mild extreme pressure conditions, offering antiwear,… Cyclon MAX GEAR HD/GL-4 250 - Manual Cyclon MAX GEAR HD/GL-4 250 High quality gear oil with selected additives for mild extreme pressure conditions, offering antiwear,… Cyclon MAX GEAR HD/GL-4 80W - Manual Cyclon MAX GEAR HD/GL-4 80W High quality gear oil with selected additives for mild extreme pressure conditions, offering antiwear,… Cyclon MAX GEAR HD/GL-4 80W-90 - Manual Cyclon MAX GEAR HD/GL-4 80W-90 High quality gear oil with selected additives for mild extreme pressure conditions, offering antiwear,… Cyclon MAX GEAR HD/GL-4 90 - Manual Cyclon MAX GEAR HD/GL-4 90 High quality gear oil with selected additives for mild extreme pressure conditions, offering antiwear,… Cyclon MAX GEAR LS/4X4 90 (85W-90) - Manual Cyclon MAX GEAR LS/4X4 90 (85W-90) Extreme pressure gear oil for axles with limited slip differentials, offering maximum protection under… Cyclon MAX GEAR PRIME 140 - Manual Cyclon MAX GEAR PRIME 140 Monograde high viscosity gear lubricant for manual gearboxes and differentials of older cars, ideal… Cyclon MAX GEAR PRIME 80W - Manual Cyclon MAX GEAR PRIME 80W Monograde high viscosity gear lubricant for manual gearboxes and differentials of older cars, ideal… Cyclon MAX GEAR PRIME 90 - Manual Cyclon MAX GEAR PRIME 90 Monograde high viscosity gear lubricant for manual gearboxes and differentials of older cars, ideal… Cyclon PRO GEAR EP GL-5 75W-90 - Manual Cyclon PRO GEAR EP GL-5 75W-90 High performance synthetic gear oil for transmissions and differentials, made with advanced base oils… Cyclon PRO GEAR HZ 75W - Manual Cyclon PRO GEAR HZ 75W Extreme performance multi-vehicle gear oil, suitable for gearboxes and transaxles requiring GL-4 SAE 75W-80.… Cyclon PRO GEAR HZ 75W-80 - Manual Cyclon PRO GEAR HZ 75W-80 Extreme performance multi-vehicle gear oil, suitable for gearboxes and transaxles requiring GL-4 SAE 75W-80.… Cyclon PRO GEAR LS/4X4 80W-140 - Manual Cyclon PRO GEAR LS/4X4 80W-140 Synthetic gear oil designed for limited‑slip differentials in heavy‑duty vehicles. It provides strong extreme‑pressure… Cyclon PRO GEAR LS/4X4 80W-90 - Manual Cyclon PRO GEAR LS/4X4 80W-90 Synthetic gear oil designed for limited‑slip differentials in heavy‑duty vehicles. It provides strong extreme‑pressure… Cyclon PRO GEAR PCT 75W-80 - Manual Cyclon PRO GEAR PCT 75W-80 Specially formulated oil for manual gearboxes and axles of passenger cars where this quality… Cyclon PRO GEAR TDL 80W-90 - Manual Cyclon PRO GEAR TDL 80W-90 High‑performance multi‑purpose driveline lubricants for synchronized and non‑synchronized gearboxes, axles and differentials. Synthetic bases…

Manual gearbox and axle oils: GL-4 and GL-5 are not interchangeable

The mistake that costs gearboxes

This is the single most common and most expensive error in driveline lubrication. API GL-5 carries a much higher level of sulphur-phosphorus extreme-pressure additive than GL-4. That is exactly what a hypoid rear axle needs, and exactly what will attack the brass and bronze synchroniser rings in many manual gearboxes. Fitting a GL-5 axle oil to a gearbox that specifies GL-4 does not fail immediately — it fails months later as crunching gear changes, and by then the synchronisers are finished.

The reverse error is quieter but just as real: a GL-4 oil in a heavily loaded hypoid axle does not carry the load, and the pinion wears.

  • Manual gearboxes calling for GL-4 — MAX GEAR HD/GL-4, ECO R2 GEAR HD/GL-4, PRO GEAR HZ 75W-80.
  • Hypoid axles, drive axles and final drives calling for GL-5 — MAX GEAR EP/GL-5, ECO R2 GEAR EP/GL-5, PRO GEAR EP GL-5 75W-90.
  • Read the plate, not the habit. Many trucks take GL-5 in the axle and GL-4 in the gearbox, from two different drums, and a busy workshop will use one if nobody insists.

Limited slip differentials need the LS additive

A limited-slip differential has friction plates inside it, and an ordinary GL-5 oil will make them chatter and judder on slow turns. Use MAX GEAR LS/4X4 or PRO GEAR LS/4X4, which carry the friction modification the clutch pack needs along with full seal and friction-material compatibility. This matters in Iraq more than the product range suggests, because of how many pickups and 4x4s are working here.

Total driveline (TDL) oils

Cyclon EVO GEAR TDL 75W-90 and PRO GEAR TDL 80W-90 are multi-purpose driveline oils built to serve synchronised and non-synchronised gearboxes, axles and differentials from one product. For a mixed fleet or a rural workshop carrying limited stock, one TDL drum replaces several — but only where the vehicle manufacturer permits it. Check before consolidating, not after.

Specific gearboxes worth knowing

  • ZF manual and automated transmissions — EVO GEAR XL 75W-80, a long-life low-viscosity synthetic fluid for smooth shifting and cold-temperature fluidity.
  • Peugeot and Citroën gearboxes — PRO GEAR PCT 75W-80, formulated for those units specifically.
  • Older cars and light commercials under light load — MAX GEAR PRIME monogrades, where the manufacturer specified a straight grade.

Viscosity in Iraqi conditions

A 75W-90 synthetic shifts noticeably better on a cold northern morning than an 80W-90 mineral oil, and holds viscosity better in summer heat, which is why it is worth offering on vehicles doing long distances. Heavier grades such as 85W-140 and 80W-140 belong on heavily loaded axles and towing duty, not as a general upgrade — a heavier oil in a gearbox that does not need it makes shifting worse when the vehicle is cold.

Frequently asked questions

What is the difference between API GL-4 and GL-5, and can I use GL-5 instead?

GL-5 carries a much higher level of sulphur-phosphorus extreme-pressure additive than GL-4. That is what a hypoid axle needs, and it is also what can attack the brass and bronze synchroniser rings in many manual gearboxes. Using a GL-5 oil where the manufacturer specifies GL-4 does not fail straight away; it shows up months later as crunching gear changes, by which point the synchronisers are worn out. The reverse is also wrong: a GL-4 oil in a heavily loaded hypoid axle will not carry the load and the pinion wears. Many vehicles take GL-5 in the axle and GL-4 in the gearbox, which means two drums in the workshop.

Which oil should I use in a limited slip differential?

A dedicated limited-slip oil: Cyclon MAX GEAR LS/4X4 or Cyclon PRO GEAR LS/4X4. A limited-slip differential contains friction plates, and an ordinary GL-5 oil will cause them to chatter and judder on slow turns. The LS products carry the friction modification the clutch pack needs together with full seal and friction-material compatibility.

What does TDL mean on a gear oil?

Total driveline. Cyclon EVO GEAR TDL 75W-90 and PRO GEAR TDL 80W-90 are multi-purpose oils built to serve synchronised and non-synchronised gearboxes, axles and differentials from a single product, which lets a mixed fleet or a workshop with limited storage carry one drum instead of several. Confirm the vehicle manufacturer permits it before consolidating.

Which gear oil is right for a Peugeot or Citroen gearbox?

Cyclon PRO GEAR PCT 75W-80 is formulated for manual gearboxes and axles of passenger cars where that quality and grade are specified, and is particularly recommended for Peugeot and Citroen gearboxes. For ZF manual and automated transmissions, Cyclon EVO GEAR XL 75W-80 is the long-life synthetic option.

Not sure which product a vehicle, machine or fleet needs? Try the Cyclon oil selector, or send us the details and we will specify it in writing.