Olds 307 Burning loads of oil?
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, Olds 307 Burning loads of oil? in Past Cadillac Vehicle Discussion; My 89 Brougham has a strange problem, 2 months ago i put brand new engine oil into it, and now ...
  1. #1
    Jeppi94's Avatar
    Jeppi94 is offline Cadillac Owners Member
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    Olds 307 Burning loads of oil?

    My 89 Brougham has a strange problem, 2 months ago i put brand new engine oil into it, and now when i checked the oil stick again, it was showing a horrifying low level of oil, below add. I'm thinking for myself "HOW IS THIS POSSIBLE" The exhausts does not smell of oil at all, and it does not drip any oil at all. The oil stick is a bit hard to get down, idk if it might be something wrong with it...or does those car simply burn a heck load of oil?

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    cadillac kevin's Avatar
    cadillac kevin is offline Cadillac Owners Master
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    Quote Originally Posted by Jeppi94 View Post
    My 89 Brougham has a strange problem, 2 months ago i put brand new engine oil into it, and now when i checked the oil stick again, it was showing a horrifying low level of oil, below add. I'm thinking for myself "HOW IS THIS POSSIBLE" The exhausts does not smell of oil at all, and it does not drip any oil at all. The oil stick is a bit hard to get down, idk if it might be something wrong with it...or does those car simply burn a heck load of oil?
    307s do not burn much oil (I never added oil on mine). I'm guessing maybe an oil pan leak, rear main seal leak, or valve cover leak.

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    Jeppi94's Avatar
    Jeppi94 is offline Cadillac Owners Member
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    Re: Olds 307 Burning loads of oil?

    oil pan leak is impossible, there have never been any oil spots on the tarmac where it stands at all for the entire summer...either it somehow leaks only when being driven or it burns,

  5. #4
    outsider is offline Cadillac Owners Connoisseur
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    Re: Olds 307 Burning loads of oil?

    yeah my 307 doesn't burn oil at all. i would check for leaks or any signs of leaks. Just because there isn't a puddle doesn't mean it's not leaking somewhere!

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    cadillac kevin's Avatar
    cadillac kevin is offline Cadillac Owners Master
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    Quote Originally Posted by outsider View Post
    yeah my 307 doesn't burn oil at all. i would check for leaks or any signs of leaks. Just because there isn't a puddle doesn't mean it's not leaking somewhere!
    This....my 350 does not leak anything where it sits, but it does leak oil at the valve cover. You have to look very closely to see it seeping, but it does seep. If it is leaking on the back side of the valve covers, you will not see it.

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    Jeppi94's Avatar
    Jeppi94 is offline Cadillac Owners Member
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    Re: Olds 307 Burning loads of oil?

    Thanks for your answers, i will take a closer look tomorrow, it is possible to remove the valve covers without having to change any gaskets?(on Saturday i'm going to have the car garaged until spring) saving it from the evil salty winter. So any larger repairs will have to wait to next season. But i will definitely go and get a gallon of oil!

  8. #7
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    You'll have to replace the valve cover gaskets. Very inexpensive.

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    jamespowers is offline Cadillac Owners Connoisseur
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    Re: Olds 307 Burning loads of oil?

    Quote Originally Posted by Jeppi94 View Post
    My 89 Brougham has a strange problem, 2 months ago i put brand new engine oil into it, and now when i checked the oil stick again, it was showing a horrifying low level of oil, below add. I'm thinking for myself "HOW IS THIS POSSIBLE" The exhausts does not smell of oil at all, and it does not drip any oil at all. The oil stick is a bit hard to get down, idk if it might be something wrong with it...or does those car simply burn a heck load of oil?
    The only thing that I can think of(aside from a leak) is that you didn't fill it full when you changed the oil or the oil dipstick is not going all the way in and making it look like you are low on oil. I know that I check the oil level again after I have run my car around a bit. Maybe a larger than stock oil filter makes a bit of a difference but it wouldn't run it dry. The filter might keep a quart of oil in it at the most.

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