I noticed ever since i put chevron techron fuel system cleaner in the near empty tank and filled up with shell premium 93 gas the car dont cold start as fast as it use to.Is it possible the previous owner was using regular gas and now the car is confused? Also i went from 5w30 oil to 10w30. Temps range from 40-70f.
1998 Jaguar XJ8 102k miles. (Premium fuel is recommended for this car)
1998 Jaguar XJ8 102k miles. (Premium fuel is recommended for this car)
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