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Hydraulic oil keeps rising: buy the drum now or wait?
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#hydraulic oil price#PSO lubricant prices#base oil shortage#Group III base oil#machine shop consumables#way oil#reshaped-v3

Hydraulic oil keeps rising: buy the drum now or wait?

Uzair bin Haroon

Buy the drum now. The industrial list you are paying from was written against a barrel near US$92, crude is above US$105 today, and the base oil that makes up most of what is in the drum has roughly doubled since January. Nothing in that chain points at a lower price next quarter, and a drum bought on an old list is the cheapest hedge available to a machine shop.

The size of the move is worth knowing before you argue about it with a supplier. Pakistan State Oil's anti-wear hydraulic oil HYGROL AW 68 went from Rs 770.59 a litre including tax on its 19 March circular to Rs 942.53 on 10 June, four price lists in twelve weeks. Spindle oil and slideway oil moved about 25 per cent over the same period, gear oil 21 per cent, soluble cutting oil 16 per cent. Same oil, same drum, same label.

Why the next list goes up, not down

Because the drum is almost entirely base oil, and base oil is where the shortage is. ILMA, the US blenders' association, puts base stock at roughly 75 per cent of an engine oil and up to 98 per cent of a hydraulic or turbine oil, so nothing else in the blend can absorb a move in it. On Petroleum Trends International figures reported from the Asian Lubricant Exhibition panel of 9 September, Group I went from US$3.30 to US$7.20 a gallon between January and July and Group II from US$2.85 to US$6.45. Hydraulic and slideway oils are blended from those two groups, so those are the lines that matter to a shop, not the 235 per cent Group III number in the headlines.

Freight is the second half of it. Salman Saadat of Petrolube told that panel that a base oil cargo from Saudi Arabia to the UAE used to take about ten days by ship and now goes round the Cape of Good Hope. Refining capacity is not the constraint; moving the molecules is. The practical consequence is that the drum you order in October was paid for months earlier, so a list price lags the market rather than leading it.

Which is why the age of the list is the signal to watch. The industrial circular in force is still the one dated 10 June, three and a half months old, while the same supplier has issued two automotive circulars since. ILMA's own customer note says Argus and ICIS do not expect Group III supply or Group II refining economics to normalise before at least mid-2027, and that Group II has traded below diesel for the first time on record, which gives a refiner every reason to make diesel instead. A list written in June against a cheaper barrel is a list with one direction left to move.

Treat the new drum as a new product

When a refinery changes its crude feed the base oil changes with it, and the label does not. Aleksandr Borisov of Petrobell told the same panel that buyers everywhere are having to retest product, and Paul Nai of Lubrizol said the emergency provisional licences issued for reformulated engine oils are temporary and that, as far as he knows, no OEM has said the changes are acceptable.

That matters most on a slideway. Way oil carries a tackifier so it clings to a vertical slide instead of draining to the sump, and the friction it gives is what keeps a table from stick-slipping on a fine feed. Change the base stock under the same label and the feel changes with it, which is how a surface-finish fault turns out to be a drum rather than a machine.

So do three things with the delivery. Ask the blender which base stock is in the drum and note the batch number; if nobody can tell you, that is an answer too. Run the first drum on one machine before it goes on all of them. And do not stretch a drain interval to make the drum last, unless the machine manual says you can. At current prices the oil is expensive. A pump is a great deal more expensive.

The other half of the bill is what leaks out and what never reaches the nipple. If the round is a dozen machines and two trucks, the guns and drains that do it without waste are priced per part number: send the list to Vesprr Tools, or start from the lubrication equipment in the catalogue.

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