Tip & How-To about Vehicle Parts & Accessories

How to prevent your door lock from freezing to the point, where the key does not turn at all?

Just before winter, dip your key into synthetic motor oil and then put the key into the lock. Slide it back in and out and turn it several times. You may have to dip it into the synthetic oil one more time and repeat the steps again. Have paper towels to clean the key, lock and any oil that runs down the door. Since I have done this, the key has always turned easily, even on the coldest days. Only use synthetic motor oil. It does not freeze until minus 45 degrees F. Regular motor oil is frozen at 0 degrees F. Temporarily oil will get on your key each time you place it into the lock. To speed the process up, place key in lock, turn, remove key and wipe off with paper towels. Do this until there is very little to no oil left on the key. This tip will work on any lock that uses a key to open it.

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4 Answers

2 synthetic oil change or 3 regular oil change so which is better


Me i find synthetic oil to be better in winter the engine turn faster in cold start but it mush more expensive to use synthetic if your looking to save money synthetic oil good for 15000 km regular around 5000km use synthetic oil because its better for the engine not to save money

Jun 10, 2014 | 2007 Acura RDX

3 Answers

I have 101,000 miles on my Trailblazer and the last time I had an oil change they wanted to put in synthetic oil......nothing in the owners manual about doing this......should I change or keep using the 10-30 I've always used?


its mostly personal preferance.. your trailblazer doesnt call for synthetic so if you dont want to spend the extra cash i would just get a decent brand 5w30 or 10w30

Mar 02, 2011 | 2002 Chevrolet TrailBlazer

2 Answers

im a single mom and dont have a owners manual for my voyager, that was given to me. i want to make sure im putting the right fluids in. can you help? it doesnt tell me on the dipsticks like some...


Engine oil for cold climates 5w-30. Warmer climates 10w-30. Any Auto-zone parts store person at the counter would be more than helpful choosing the correct fluids for your vehicle.

Feb 15, 2011 | 1995 Plymouth Voyager

3 Answers

what motor oil weight should I be using on my 96 olds 88....we live where the winter temps can go as low as -10 F and as hot as 95F in the summer


5w 30 or 10w 30 during the winter. After an oil change... check your oil after 200-300 miles of use. Is the level the same? If so your weight is fine. If it drops, it's to light of an oil and your engine is now "drinking it" like fuel, move to a heavier weight. As far as Changing between winter and summer. Changing Oil weights is not bad for your motor so if the winter you go with 5w 30 and it works, great, shoot for the same during the summer. If it seems to "drink it" during the summer using this weight, go up to the next (10w 30)

That being said. Changing from natural oil, to synthetic, back to naturual , or vice versa... swapping back and forth between these KINDS of oil has been known to cause damage. so whatever weight you decide on, stick with one "type", natural or synthetic.

Feb 27, 2010 | 1998 Oldsmobile 88

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