Subaru Forester: Specifications / Recommended lubricants and capacities. Recommended SAE viscosity (thickness) number

Maintaining the long-term reliability and peak performance of your Kia Telluride depends heavily on using the exact lubricants and fluids specified by the manufacturer. Utilizing the correct high-quality fluids not only safeguards the intricate components of the engine and powertrain against premature wear but also optimizes fuel efficiency and overall driving dynamics. To ensure your vehicle operates exactly as engineered, strictly adhere to the following fluid specifications and capacities:

Lubricant		Volume	Classification
Engine oil (drain and refill)	Smartstream G2.5 T-GDi	6.13 US qt. (5.8 L)	Full synthetic SAE 0W-30, API SN PLUS/SP, or ILSAC GF-6
Automatic transmission (AT) fluid 1		7.5 US qt. (7.1 L)	SK ATF SP4M-1, MICHANG ATF SP4M-1, S-OIL ATF SP4M-1, Kia Genuine ATF SP4M-1
Coolant 2	Smartstream G2.5 T-GDi	12.16 US qt. (11.51 L)	Phosphate based ethylene glycol based coolant
Brake fluid		As required	DOT 4
Rear differential oil (AWD)		0.70–0.77 US qt. (0.66–0.73 L)	HYPOID GEAR OIL API GL-5, SAE 75W/85 (Recommended: SK HCT-5 GEAR OIL 75W/85 or equivalent)
Transfer case oil (AWD)		0.70–0.77 US qt. (0.66–0.73 L)	HYPOID GEAR OIL API GL-5, SAE 75W/85 (Recommended: SK HCT-5 GEAR OIL 75W/85 or equivalent)
Fuel		19 US gal. (72 L)	Gasoline

It is imperative that you utilize only the genuine automatic transmission fluid specified for your Kia Telluride. The use of generic or non-specified transmission fluids—even those marketed as "compatible"—can compromise shift quality, induce unwanted vibrations, and eventually lead to catastrophic transmission failure. Please cross-reference these requirements with the detailed Explanation of scheduled maintenance items provided in your service guide.

Furthermore, ensure that only recommended coolants are used; mixing different types of coolant or introducing plain water into the cooling system can cause severe chemical reactions that lead to corrosion and damage to sensitive electrical components.

Recommended SAE viscosity (thickness) number

NOTE

NOTE

Engine oil viscosity acts as a critical factor in both fuel economy and cold-weather operability, influencing everything from the ease of initial engine starting to the rate at which oil flows to vital components during warmup. Lower-viscosity oils are engineered to reduce internal friction, thereby boosting fuel efficiency and ensuring rapid lubrication during low-temperature starts. Conversely, higher-viscosity oils are essential for maintaining a robust protective film under the high-thermal conditions encountered during heavy-load driving or hot weather.

Using an engine oil with a viscosity grade outside of the manufacturer's recommendation can lead to improper lubrication, causing significant engine stress and permanent damage over time.

When selecting your engine oil, carefully consider the ambient temperature range of your driving environment until your next scheduled maintenance. Refer to the chart below to select the appropriate viscosity grade for your local climate.

Temperature Range for SAE Viscosity Numbers

A: Smartstream G2.5 T-GDi

The American Petroleum Institute (API) Certification Mark identifies engine oils that satisfy the stringent quality standards set by the International Lubricant Specification Advisory Committee (ILSAC). To ensure the health of your powertrain, you should exclusively use engine oils that feature this official API Certification Mark.