fuel type
Use the lowest octane that you can, if the engine knocks or pings then step up a grade until the noise goes away or have the engine de-carboned.
the 5.7L TBI engine in your 94 Suburban is designed to run on Regular Unleaded which is 85 to 88 octane in most places depending on elevation.
the 5.7L TBI engine in your 94 Suburban is designed to run on Regular Unleaded which is 85 to 88 octane in most places depending on elevation.
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sellersoasis
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