1995 GMC Jimmy Owner's Manual - Page 242

Doing Your Own Service Work If you want to do some of your own service work, you'll want to the get proper GM Service Manual. It tells you much more about how to service your vehicle than this manualcan. To order the proper service manual, see "Service Publications" in the Index. and You should keep a record with all parts receipts list the mileage and the date of any service work you perform. See "Maintenance Record" in the Index. NOTICE: If you try todo your own service work without knowing enough about it, your vehicle could be damaged. Fuel Use regular unleaded gasoline rated at 87 octane or higher. Use premium unleaded gasoline rated at91 octane or higher for high power performance, when towing a trailer or with a high payload requirement.But when operating with a light load as a normal condition, you may use middle grade or regular unleaded gasolines. 6-2