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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Subaru XtOil Type & Capacity
OEM spec from the factory service manual for the 1.8 4, Automatic variant.
Quick Answer
Oil Type
$API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F)
Capacity (w/ Filter)
4.20 QTS.
3.97 L
Variant
1.8 4, Automatic
This vehicle's factory manual
1990 Subaru Xt: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Sister site: See this spec on WhatTypeOfOil.com — our quick oil type & capacity lookup for every vehicle.
Other specs:All specs
What You'll Need
Engine Oil
$API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) for Subaru Xt
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Oil Filter
Subaru Xt Oil Filter
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Tool
Oil Filter Wrench
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Kit
Funnel + Drain Pan Kit
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Related for Your 1990 Subaru Xt
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Frequently Asked Questions
- What type of oil does a 1990 Subaru Xt take?
- The 1990 Subaru Xt requires API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F). The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the 1.8 4, Automatic configuration.
- How much oil does a 1990 Subaru Xt need?
- The 1990 Subaru Xt takes 4.20 QTS. (3.97 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 1990 Subaru Xt?
- Yes — synthetic oil that meets the API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 1990 Subaru Xt?
- Using oil that does not meet the API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.