My little Nissan Versa has 1 different cap for its radiator, and another for its RESERVOIR. I was told by the Nissan dealer’s parts guy that aluminum foil would do-the-trick for the RESERVOIR cap. Does this sound accurate? Also I goofed again by adding coolant (with half water) to the RESERVOIR and not the radiator. I have an eye-dropper where I can squeeze out much of the coolant’s mixture. But my radiator still is lacking in coolant…at least I think it’s lacking. I stuck my finger down in its neck and came up empty.
Also,I mistakenly added one quart - just one - of 10W40 oil to the engine. The manual says 5W30 which was used when I had the oil changed a few months ago. The engine oil capacity is 3-1/8 quarts. Did I hurt the engine by adding this one quart on top of what was remaining since my last oil change? The dipstick registered next to nothing before I added the goof oil.
Thanks a lot.