1986 Chevrolet Silverado Oil leak

Tiny
THOMASTJM
  • MEMBER
  • 1986 CHEVROLET SILVERADO
  • 4WD
  • AUTOMATIC
I have a 1986 k10 truck and two days ago I changed my oil and put in 10w-30 synthetic blend and the problem started that day. Oil has been leaking somewhere and dripping onto my exhaust pipe causing smoke to come up the right side of the truck and also up through the hood. The oil pan and also the oil filter are both completely clean and dry. I have looked through the hood and from under the truck but I can't figure out exactly where the oil is coming from, there are many parts very wet with oil and the drip has been burning on the exhaust in two different spots.
Monday, April 13th, 2015 AT 9:45 PM

5 Replies

Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
Sounds to me like about cover gaskets are leaking what you need to do is go to the car wash and spray your engine off try to keep the water away from the distributor
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Monday, April 13th, 2015 AT 10:28 PM
Tiny
CARADIODOC
  • MECHANIC
  • 34,332 POSTS
It seems to be common to develop a leak when you switch to synthetic oil, and it will stop leaking if you switch back. To find the source, you can wash the area, add a small bottle of dark purple dye to the oil. Drive a few miles, then search with a black light. The dye will show up as a bright yellow stain that you can follow back to the source. Auto parts stores will have the dye, and those that rent or borrow tools should have a black light.
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Monday, April 13th, 2015 AT 10:34 PM
Tiny
THOMASTJM
  • MEMBER
  • 3 POSTS
Thanks, so after cleaning it what would I do?
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Monday, April 13th, 2015 AT 10:54 PM
Tiny
THOMASTJM
  • MEMBER
  • 3 POSTS
I believe there was synthetic oil in even before it started to leak, is there anything else to stop it?
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Monday, April 13th, 2015 AT 10:55 PM
Tiny
CARADIODOC
  • MECHANIC
  • 34,332 POSTS
Add a small bottle of dark purple dye to the oil. Drive a few miles, then search with a black light. The dye will show up as a bright yellow stain that you can follow back to the source.

Hi Dr Loot. Didn't intend to butt into your conversation.
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Monday, April 13th, 2015 AT 11:05 PM

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