By Butt Oil Traders Team — Lahore’s engine oil specialist since 1999. WhatsApp 0328-4500975. Last updated: 9 September 2026.
Every article on this topic ends the same way: “synthetic is better, buy synthetic.” Then the writer goes home in a Mehran running on 20W-50 mineral, and it runs fine.
Here’s the version with prices, capacities and a calculator. You’ll see that for some cars synthetic saves money, and for others it’s Rs 9,000 spent to feel modern.
Quick answer: Use fully synthetic (Shell Helix HX7 5W-30, ZIC X7 10W-40, Total Quartz 9000) for any car from 2015 onwards and every hybrid; semi-synthetic (ZIC X5 10W-40, Castrol Magnatec 10W-40) for 2005–2015 daily drivers; mineral 20W-50 (Havoline, Total Quartz 3000) for pre-2005 engines and bikes. In Lahore, that’s Rs 8,499, Rs 5,999 and Rs 4,299 respectively, per pack.
What is the actual difference between mineral, semi-synthetic and fully synthetic?
All three start as crude oil. The difference is how far the refinery goes.
Mineral is refined crude with additives. Molecules of mixed sizes. Thins out faster above 100°C, thickens more at cold start, and forms sludge sooner. Cheap to make, fine in engines built with loose tolerances.
Semi-synthetic is mineral base with a portion of synthetic base stock blended in, usually 10–30%. Better heat stability than mineral, less than full synthetic. Most of what Pakistani dealerships pour at a “service” is this.
Fully synthetic is a base stock built to a uniform molecule size (Group III VHVI or Group IV PAO), so it keeps its thickness at 130°C in a Lahore June engine bay and flows at cold start in a Murree December. It also holds more additive and holds it longer.
DID YOU KNOW: A Lahore engine bay at 2 pm in June sits between 120°C and 135°C. Mineral 20W-50 starts shearing (permanently thinning) above roughly 110°C. That’s why old cars in Lahore “eat” oil in summer, and why the same oil lasts longer in Islamabad.
We put the three side by side in this video, with the bottles in hand:
What do the three types cost in Pakistan right now?
📌 Save this table. Prices are our shelf prices, 9 September 2026.
Swipe ← → to see the full table
| Oil | Type | Grade | Pack | BOT price | Change every | Cost per 1,000 km* |
|---|---|---|---|---|---|---|
| Caltex Havoline Motor Oil | Mineral | 20W-50 | 3L | Rs 4,299 | 3,500 km | Rs 1,291 |
| Total Quartz 3000 | Mineral | 20W-50 | 4L | Rs 5,299 | 3,500 km | Rs 1,577 |
| ZIC X5 | Semi-synthetic | 10W-40 | 3L | Rs 5,999 | 5,000 km | Rs 1,244 |
| Castrol Magnatec | Semi-synthetic | 10W-40 | 4L | Rs 7,399 | 5,000 km | Rs 1,524 |
| Kixx G1 | Semi-synthetic | 10W-40 | 4L | Rs 10,100 | 5,000 km | Rs 2,064 |
| ZIC X7 (API SQ) | Fully synthetic | 10W-40 | 4L | Rs 8,499 | 7,500 km | Rs 1,163 |
| Shell Helix HX7 | Fully synthetic | 5W-30 | 4L | Rs 8,599 | 7,500 km | Rs 1,176 |
| Total Quartz 9000 | Fully synthetic | 5W-30 | 4L | Rs 8,799 | 7,500 km | Rs 1,203 |
| Kixx G1 (SN Plus) | Fully synthetic | 5W-30 | 4L | Rs 10,999 | 7,500 km | Rs 1,496 |
| Mobil 1 | Fully synthetic | 5W-30 | 4L | Rs 13,999 | 8,000 km | Rs 1,777 |
| Genuine Toyota (Japan) | Fully synthetic | 0W-20 | 4L | Rs 14,999 | 8,000 km | Rs 1,903 |
*Pack price plus a Rs 220 filter, divided by the Lahore city change interval we recommend. Your own interval may differ.
Read the last column again. ZIC X7 fully synthetic at Rs 8,499 costs less per kilometre than Havoline mineral at Rs 4,299. The pack is dearer. The year is cheaper. That’s the part every “synthetic vs mineral” article skips.
So why do Toyota and Suzuki dealerships still pour semi-synthetic?
Because it’s what the service package is priced on, and because most customers never ask. We made a video about it after a Yaris owner showed us his dealer receipt:
Semi-synthetic isn’t a scam. On a 2012 Corolla driven 900 km a month, ZIC X5 10W-40 at Rs 5,999 every 5,000 km is a sensible choice. The problem is when it goes into a 2023 Yaris that was designed around 0W-20 and a 10,000 km interval. The engine survives. It just never runs the way it was built to.
Is thicker oil safer for an old engine? (The 20W-50 myth)
You’re probably thinking your mechanic said “purani gaari, mota oil.” He’s half right, and the half he’s wrong about is expensive.
A 2003 Cultus with 220,000 km and worn bearings does like 20W-50. The extra film covers the clearance. A 2019 Alto with an AGS gearbox and tight tolerances does not. The oil pump strains, the timing chain tensioner starves on cold start, and the “saving” of Rs 2,200 a pack turns into a Rs 1,40,000 engine job around 80,000 km.
MYTH BUSTER: “Synthetic oil is thinner, so it leaks.” Synthetic 5W-30 and mineral 5W-30 are the same thickness at operating temperature. What synthetic does is clean old sludge that was quietly plugging a tired seal. The leak was already there.
Which one should your car get?
Our counter rule, the one we use when someone walks in and just says the car’s name:
Mineral 20W-50 (Havoline, Total Quartz 3000, Castrol GTX): Mehran, pre-2008 Cultus and Alto, Khyber, Charade, pre-2005 Corolla and Civic with 150,000 km or more. Also every CD70 and CG125 (in the 4T version: Kixx 4T 20W-50 at Rs 1,399 for 700 ml, Atlas Honda Genuine at Rs 799).
Semi-synthetic 10W-40 (ZIC X5, Castrol Magnatec, Total Quartz 5000): 2005–2015 Corolla, City, Civic, Cultus, Liana, Swift. Anything on a tight monthly budget that still sees 5,000 km between changes.
Fully synthetic 5W-30 / 10W-40 (ZIC X7, Shell HX7, Total Quartz 9000, Kixx G1): 2015+ everything. City 2021, Civic 2016+, Corolla 2014+, Alto 660, Wagon-R, Cultus 2017+, Sportage, Tucson, MG, Haval, Changan.
Fully synthetic 0W-20 / 0W-16 (Genuine Toyota, Mobil 1 0W-20, Kixx G1 0W-20 at Rs 12,199): Aqua, Prius, Vezel, Yaris 2020+, Corolla Cross, Fit hybrid. Not optional. Hybrid engines stop and start 40 times on a Lahore commute, and only a 0W oil is at the bearings in time.
What about hybrids and the new Chinese cars?
Three lines, because people keep asking:
Toyota and Honda hybrids (Aqua, Prius, Vezel, Fit): 0W-20 fully synthetic, or 0W-16 if the cap says so. A 5W-30 will not destroy it, but you’ll lose 3–5% fuel economy and the engine will sound busier at every restart.
Chinese petrol cars (Haval H6, MG HS, Changan Alsvin, Oshan): 5W-30 fully synthetic, API SP or SQ. Turbo engines cook cheaper oil.
EVs (BYD Atto 3, Seal, Dolphin): no engine oil. There’s a reducer/gearbox fluid at around 40,000 km and that’s it.
Where we personally draw the line
We sell all three types. We’d still never put mineral oil in any car younger than us, and we’d never pay Rs 13,999 for Mobil 1 in a 2014 Cultus that will be perfectly happy on ZIC X7 at Rs 8,499. The sweet spot for most of Lahore is a Group III fully synthetic in the Rs 8,000–9,000 range, changed every 7,500 km with a fresh Rs 220 filter. What that works out to at a Lahore workshop is in our oil change price guide. That’s the honest answer, and it’s also the cheapest per kilometre.
Bottom line
- Per kilometre, fully synthetic at Rs 8,499 is cheaper than mineral at Rs 4,299 because it lasts twice as long. Do the maths on your own pack.
- Match the type to the engine’s age and design, not to the price tag: mineral for pre-2005 and bikes, semi for 2005–2015, full synthetic for 2015+ and every hybrid.
- 20W-50 in a modern small engine isn’t “safer”. It’s the most common cause of the expensive repairs we see.
This week: open your bonnet and read the oil cap. It says a grade. Then look at your last bill. If the two don’t match, send both to WhatsApp 0328-4500975 with your car’s model year. We’ll tell you whether to switch, and what it costs today.
Frequently asked questions
Which is better, synthetic or mineral engine oil?
For any car built after 2015, fully synthetic, and not only for protection. A Rs 8,499 synthetic pack changed every 7,500 km works out to about Rs 1,163 per 1,000 km. A Rs 4,299 mineral pack changed every 3,500 km works out to about Rs 1,291.
The cheaper bottle costs more over a year. For pre-2005 engines with worn clearances, and for bikes, mineral is still the right answer.
Which engine oil is best in Pakistan?
There is no single best. There is a best for your engine. For most 2015-onwards cars in Lahore we reach for ZIC X7 10W-40 at Rs 8,499, Shell Helix HX7 5W-30 at Rs 8,599 or Total Quartz 9000 5W-30 at Rs 8,799.
For hybrids and anything whose cap says 0W-20, Genuine Toyota 0W-20 at Rs 14,999 or Mobil 1 0W-20 at Rs 13,999. For a Mehran or an older Cultus, Havoline 20W-50 at Rs 4,299 is genuinely the correct choice, not a compromise.
What is the disadvantage of fully synthetic engine oil?
Two real ones. It costs more per pack, which matters if money is tight this month even though it works out cheaper per kilometre. And in a high-mileage engine it can clean out sludge that was quietly plugging a tired seal, so a leak appears.
That leak was already there. The oil exposed it, it did not cause it. In a very worn engine that already burns oil, a semi-synthetic or mineral can be the more sensible choice.
Why do people say to avoid mineral oil?
Because it gets used in the wrong cars. Mineral 20W-50 shears and thins permanently above roughly 110°C, and a Lahore engine bay sits between 120°C and 135°C at 2 pm in June.
In a 2003 Cultus with 220,000 km it is fine and the thicker film helps. In a 2019 Alto with tight tolerances and an AGS gearbox, it strains the oil pump and starves the timing chain tensioner on cold start.
5W-30 vs 10W-40, which does my car need?
Read the oil cap or the manual first, then match it. The first number is cold flow, the second is thickness at operating temperature. A lower first number means the oil reaches the bearings faster on start-up, which is when most engine wear happens.
Broadly: 5W-30 for 2015-onwards Suzuki, Honda and Toyota petrol cars; 10W-40 for 2005 to 2015 cars and higher-mileage engines; 0W-20 for hybrids and new Toyotas that specify it; 20W-50 for pre-2005 engines and bikes.
Can I switch from mineral to synthetic oil in an old car?
Yes, at any oil change, and you do not need a flush first. Modern engine oils are all compatible with each other.
If the engine has 150,000 km or more and has been on mineral its whole life, watch the level for the first 1,000 km. If it starts using oil or weeping from a seal, drop back to a semi-synthetic 10W-40.
Can I mix synthetic and mineral oil?
For an emergency top-up on the road, yes. Every modern engine oil is compatible with every other one, and running low is far more dangerous than running mixed.
As a habit, no. You pay synthetic money and get the protection of the weaker oil in the mixture. Top up with the same grade at the next chance.
Does engine oil expire?
Sealed and stored out of the sun, an unopened pack is good for about 5 years. An opened bottle should be used within a year, because it takes moisture out of the air.
Oil sitting inside an engine is different. It degrades by time as well as by kilometres, so a car driven only 2,000 km a year still needs its oil changed once a year.
Share this with anyone who was told “purani gaari, mota oil.”
How this was verified: written on the Butt Oil Traders shop floor at 17 KM Ferozepur Road, Shami Auto Market, Lahore. We have stocked mineral, semi-synthetic and fully synthetic oils since 1999. Every price is our own shelf price on 9 September 2026. Cost-per-km figures use our recommended Lahore city intervals.
