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API GL-1 is for manual transmissions operating under such mild conditions that straight petroleum or refined petroleum oil may be used satisfactorily. Oxidation and rust inhibitors, defoamers, and pour depressants may be added to improve the characteristics of these lubricants. Friction modifiers and extreme pressure additives are not be used.
If you're unsure if GL-1 oil is suitable for your vehicle, please contact us for custom oil recommendation.
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