Front seal oil leak; Can I use an external sealant to plug it?
#11
Don't jump straight to the rear main right away. The very back of the lower intake manifold gasket where it meats the block on the 4.3 has a tendency to spring a leak, run down the back of the block, and give the illusion of a rear main seal gone bad. Not saying that's what it is for sure in your case, but it would not be the first time.
#12
Thanks for the heads up.
I spawned another thread that's on topic for that.
So, loose oil pan bolts, you say?
I think I know what caused that. I've been also trying to fix a this shaking problem my Blazer has at highway speeds. I just put new shocks on a few days ago, and I'm scheduled for new tires too. Hopefully that will resolve the shaking.
Can that lower intake manifold also spring a leak from excessive vibration?
I spawned another thread that's on topic for that.
So, loose oil pan bolts, you say?
I think I know what caused that. I've been also trying to fix a this shaking problem my Blazer has at highway speeds. I just put new shocks on a few days ago, and I'm scheduled for new tires too. Hopefully that will resolve the shaking.
Can that lower intake manifold also spring a leak from excessive vibration?
#13
#14
A leaking rear main seal will coat the front of the flex plate. If there is no oil on the flex plate, then it very well could be leaking at the pan. The newer trucks have an o-ring style seal on the pan and it can be snugged up without replacing the gasket providing there isn't any junk between the pan & the block.
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