Quote:
Originally Posted by gosu22
So, I decided it was time for an oil change, got my Bosch 3400 oil filter and 4 quarts of Chevron regular motor oil 10W-30.
I loosened my oil filter, unscrewed the oil bolt and then let it drain for about 40 minutes. Took out the filter, put in the new one, put the oil bolt back on and then poured in 4 quarts of the 10W-30. Let the engine run for about 20 minutes and then checked my dipstick, it's way above the H mark. Like, I think it goes maybe an inch past it?
This is weird to me because I replaced the filter, and I know I'm supposed to add like 4 new quarts because I let it drain for a long time. Either I don't know how to read my dipstick, or I have too much oil. I mean, I know that there might be some residue oil, like maybe a half quart at the most... Does this mean I should only add 3 1/2 quarts?
I was thinking of draining all my oil again, and then pouring them into the motor oil bottle, and this time only filling up like 3 quarts or something after letting it drain for maybe a few minutes. Then I'll wait 20 minutes for it to run, and then check my dipstick to try to get it in between L and H (which is where I think it's supposed to be).
I did check on level terrain, and that's when I knew for sure every time it's past the H mark, so I think I have too much oil but I don't know why.
How many quarts do you add? What if there is additional oil past the H mark, and how am I supposed to tell? Basically, how do I read the dipstick? It seems like there's always some kind of extra oil there.
Also, what does it mean when your oil is bubbly (after a little spirited driving)? Is that normal?
My brother was explaining to me that when you have too much oil, the crankshaft hits the top of the oil sump or something, and it makes it really frothy. Is that about right? What happens when you have too little oil? How does having extra oil affect the engine adversely?
When you add oil, is it perfectly at the middle, or do you add less and then add as necessary?
Any help is greatly appreciated, thanks. =]
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My 89 was filled right up to the high mark when I put in 3.5 quarts.
You should put in a little bit less than what you think will get you at the "full" level. Then you should run the car and then add if you need to.
Excess oil makes froth in the oil pan -> Bubbles don't lubricate.
I have a pdf of a fsm (not sure what year) and it says 3.5L (3-1/8 qt) when you change the oil with a filter. That doesn't seem right ot me so I''ll find my print copy of the fsm to double check.
I do, however, know that you need under 4 qt. for a change.