2009 Nissan GT-R Owner's Manual - Page 217

COLD WEATHER DRIVING FREEING A FROZEN DOOR LOCK To prevent a door lock from freezing, apply deicer through the key hole. If the lock becomes frozen, heat the key before inserting it into the key hole or use the Intelligent Key system. of summer tires is substantially reduced when temperatures are less than 328F (08C) so you must drive carefully. NISSAN recommends the use of winter or all-season tires on all four wheels if you plan to operate your vehicle in snowy or icy conditions when temperatures are less than 328F (08C)...A sturdy, flat board to be placed under the jack to give it firm support. A shovel to dig the vehicle out of snowdrifts. Extra window washer fluid to refill the reservoir tank. ANTI-FREEZE In the winter when it is anticipated that the outside temperature will drop below 328F (08C), check antifreeze to assure proper winter protection. ( "ENGINE COOLING SYSTEM" page 8-9) DRIVING ON SNOW OR ICE WARNING Never use summer tires when the temperature is below −48F (−208C) to prevent permanent tread deformation which may cause tire damage or tire failure. This may cause a loss of vehicle control which can result in serious personal injury or death. Tire chains may be used. ( page 8-36) "TIRE CHAINS" . WARNING Wet ice (328F, 08C and freezing rain), very cold snow or ice can be slick and very hard to drive on. The vehicle will have much less traction or "grip" under these conditions. Try to avoid driving on wet ice until the road is salted or sanded. Whatever the condition, drive with caution. Accelerate and slow down with care. If accelerating or downshifting too fast, the drive wheels will lose even more traction. Allow more stopping distance under these conditions. Braking should be started sooner than on dry pavement. Allow greater following distances on slippery roads. Watch for slippery spots (glare ice). BATTERY If the battery is not fully charged during extremely cold weather conditions, the battery fluid may freeze and damage the battery. To maintain maximum efficiency, the battery should be checked regularly. ( "BATTERY" page 815) . DRAINING OF COOLANT WATER If the vehicle is to be left outside without antifreeze, drain the cooling system, including the engine block. Refill before operating the vehicle. For details, contact a GT-R certified NISSAN dealer. If you install tires, they must also be the specified size, brand, construction and tread pattern on all four wheels. SPECIAL WINTER EQUIPMENT It is recommended that the following items be carried in the vehicle during winter: . A scraper and stiff-bristled brush to remove ice and snow from the windows and wiper blades. . TIRE EQUIPMENT The GT-R summer tires are made from a specially formulated rubber to maximize the vehicle's performance capabilities. Performance . . 5-42 Starting and driving