I recently bought a 2019 Suzuki Swift (automatic) that has clocked 76,000 km, mostly in Islamabadās urban environment. The manufacturerās recommended engine oil, as mentioned under the bonnet, is 10W-40, which is also endorsed by Suzukiās service center, where they offer a semi-synthetic 10W-40 option. However, many car owners suggest using either 5W-30 or 10W-30 instead.
I need advice on the following:
Oil Grade for Hot Weather: Given that Islamabadās summer temperatures often surpass 40Ā°C, would switching to 5W-30 or 10W-30 be a wise decision, or should I stick with 10W-40 to ensure better protection?
Semi-Synthetic vs. Fully Synthetic: The car was previously driven using semi-synthetic 10W-30. Would transitioning to fully synthetic oil at this stage be advisable? Could it positively or negatively impact engine health or efficiency?
Best Engine Oil Brand in Islamabad: Since I prioritize high-quality imported oil, I want to avoid locally blended variants. Some claim that brands like Shell and Total are locally processed. Which are the most reliable imported options available in Islamabad?
Liqui Moly as an Option: Despite being more expensive, I am willing to invest in Liqui Moly, provided it offers better longevity, performance, and fuel economy. However, fully synthetic Liqui Moly seems to be out of stock, with only semi-synthetic alternatives available. Should I consider Liqui Moly, or would another premium brand be a better choice?
My main concerns are engine durability, fuel efficiency, and a smoother driving experience, as I plan to keep this vehicle for the next 2-3 years. Based on these factors, which oil type (fully synthetic or semi-synthetic) and viscosity (5W-30, 10W-30, or 10W-40) would be most suitable for my Suzuki Swift in Islamabadās climate?
