Hey all, 1987 325i M20, the car has had an excessive oil leak since I bought it (about 2 quarts/month), which probably won't be fixed til next spring. Lately when it rains, the oil stain will turn light brown as if the car had a head gasket leak. I shit a brick when I saw it but the coolant level is perfect and temp hasn't changed (a month ago I replaced t-stat, most coolant hoses, and flushed and filled w/new coolant etc).
Oil on the dipstick looks fine. When the oil is dripping it's a dark brown color. It's only after rain that it turns light brown, but what I don't get is why it's never done this before. The last oil I used to top off the car was some shitty off brand 10w-40 at Chevron. I'm wondering does cheap oil deposit turn chocolate milk colored more readily than Castrol?
Basically I'm 98% sure my car is okay but it would be nice to know why this happens. Any input would be great.
Oil on the dipstick looks fine. When the oil is dripping it's a dark brown color. It's only after rain that it turns light brown, but what I don't get is why it's never done this before. The last oil I used to top off the car was some shitty off brand 10w-40 at Chevron. I'm wondering does cheap oil deposit turn chocolate milk colored more readily than Castrol?
Basically I'm 98% sure my car is okay but it would be nice to know why this happens. Any input would be great.
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