Depends on what you mean by engine knock. True engine knock is caused by detonation of fuel due to an overly advanced ignition timing. Most newer cars have a knock sensor which causes the computer to retard ignition timing which eliminates knock. Thicker oil will have no affect on this type of condition.
If, on the other hand, you are calling valve tapping ';knock';, then, a thicker oil will help quiet this. However, what really needs to be done is to have your valves adjusted.I have a dodge stratus i started getting a little engine knock. could that be fixed with a thicker motor oil?
Eddie is a little confused, there is two kinds of knock, Ignition or Mechanical and that can be anything from tappet to rods or pistoin slap and so on. its up to you to figure out what it is, Now as far as oil Chris is right, but Chrysler does not recommend that heavy of a oil, it can cause a lot of engine problems wear,damage and cavitation.
Now us ';old'; guys used gear oil in the crank case to throw a bandage on the problem till we could pull the engine and rebuild it, It worked on my 80 302 bronco for 6 months
So good luck
Don't use the gear oil idea you'll ruin the engineI have a dodge stratus i started getting a little engine knock. could that be fixed with a thicker motor oil?
I bet your pistons are getting a bit of carbon build up on them, which is raising compression and causing the detonation or ';knock';. Try using a higher octane gasoline (91) before you make the mistake of pouring honey into your engine. Ill bet using a higher octane will fix ur problem
Well using a thicker oil can reduce the appearance of the knock but won't prevent the end result. Also, it will kill your fuel mileage. A 20w50, 30w or something along those lines can help, yes. But a different oil won't ';fix'; anything
some of the old school guys claim using something like a 10-40 or 15-40 will help, i personally couldnt tell you
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