25L COMPRESSOR OIL

*25L Compressor Oil Screw* = Big drum for screw compressor – 25L = 1 drum. For 10HP, 15HP, 20HP screw.

Screw oil is ISO 46 – Thin oil. Not piston oil ISO 100.

### *25L Screw Oil Specs*
Spec Details
**Volume** 25L = 25 litres – 1 drum
**Viscosity** ISO VG 46 – Standard for screw
**Type** Mineral / Semi-Synthetic / Full Synthetic PAO
**Base** Mineral or Synthetic
**Color** Light yellow clear
**Temp** -10°C to 100°C
**Flash Point** 220°C +
**For** Oil-injected screw compressor only – NOT piston
###

### *25L vs 20L vs 4L –
**25L Drum** **₦85k mineral** **₦3,400 / L** **Save ₦11k + 5L extra**
**200L Drum** ₦280k – ₦350k mineral ₦1,400 – ₦1,750 / L Save 50% – For factory with 3+ compressors
*25L is cheapest per litre for 1-2 compressors. 200L only if you have 3+ compressors.*

### *How Many 25L Drums You Need*
Compressor Oil Capacity 25L Drums Needed Change Frequency
**7.5HP Screw** 7-8L 1 drum = 3 changes 1 drum lasts 1yr if 2000hrs mineral
**10HP Screw** 10-12L 1 drum = 2 changes 1 drum lasts 1yr
**15HP Screw** 15-18L 1 drum = 1 change + 7L left 1 drum per change
**20HP Screw** 20-25L 1 drum = 1 change 1 drum per change
**30HP Screw** 30-35L 2 drums = 1 change 2 drums per change
**50HP Screw** 50-60L 2-3 drums = 1 change 2-3 drums
*For 10HP, 1x 25L drum = 2 full oil changes + top up.*
**Full Synthetic PAO 20L ₦250k**
**Hours** 2000 hrs 4000 hrs – 2x 8000 hrs – 4x
**Cost Per 1000hrs** ₦42,500 **₦32,500 – Cheapest** ₦43,750
**Lagos Heat 35°C** OK, change at 1500hrs Better, stable to 4000hrs Best, stable
**Carbon** Some carbon Less carbon Almost no carbon
**For** Workshop 4hrs/day **Factory 8hrs/day – Best value** 24hrs/day, no shutdown
**Change Per Year 8hrs/day** 2x per year 1x per year 1x per 2yrs
*If you run 8hrs/day, semi is cheapest – You save 1 oil change labor ₦30k + 1 filter ₦15k.*

**Viscosity Test** Thin, flows fast Thick, flows slow – Engine oil
*Test*: Put oil in fridge 1hr – Real screw oil 46 still flows. Fake engine oil thickens.

### *Key Tips*
1. *Don’t use engine oil 15W40*: Saves ₦40k now, kills airend ₦800k later – Carbon blocks separator
2. *Don’t mix mineral + synthetic*: If switching, drain fully + flush with 2L new oil first
3. *Check sight glass weekly*: Oil must be middle. Low oil = airend seizes. High oil = oil carry over
4. *Drain water daily*: Screw oil + water = milky white = Change oil immediately
5. *Store drum*: Keep drum closed, indoors – Lagos humidity adds water to open drum in 1 week
6. *Top up*: Keep 5L spare from 25L drum for top up

What HP is your screw compressor – 10HP, 15HP, or 20HP? And how many hours per day do you run? I’ll tell you if 25L mineral is enough or semi saves you 1 oil change per year.