60 series....Tech and Classifieds (19 Viewers)

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I guess I could buy it, put the semi-float rear & unlocked front back under it, and send it back out into the wild.

But I don't have a tow rig, trailer, etc.
 
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I guess I could buy it, put the semi-float rear & unlocked front back under it, and send it back out into the wild.

But I don't have a tow rig, trailer, etc.
maybe we need to pool our money and invest in a CottonLand roll-back.....it'd dang sure get a lot of use!
 
Milestone

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For the record, this thing is back to bleeding oil with the 15w-50 synthetic that that Fing Braswell recommended. It has ZDDP though.......

Still no visible smoke. Running superb. No leaks. Nothing.

I'll keep dumping this expensive oil in it and enjoying the ride.

ZDDP to the top.
 
BTW, what is ZDDP?

I ran 20w-50 Castrol forever because @Texican told me to. Then that fuggin Braswell said that my flat top motor would blow up if I used it. Said the 15-50 was the ZDDP (zinc) master.

This oil is a turd.

He's a turd.
 
I would avoid synthetic oil on older high mileage motors. Seems like the synthetics find any available opportunity to seap.
 
When you pull the oil fill cap with the engine running is there a lot of air rushing out? I think you said no noticeable leaks? Have you pulled the plugs and checked their color? That much oil consumption has to show up somewhere.
 
No noticeable air rushing out is good. Suggests that rings are probably good and PCV system is functioning properly.

How does the tailpipe look? Color and wet/dry. Take a business card (or similar) and fold in 1/3-2/3. Hold the bottom 1/3 to the bottom of the tailpipe while the engine idles. Do the exhaust pulses steadily push the card away or does the card get sucked back into the pipe? This will give us a quick and dirty look at the valve condition/adjustment.
 
I honestly don't think you are looking at a full rebuild yet. The answer is cheaper early but lets figure a little more out first.

The first check is a rough assessment of your rings. Next we will get an idea of the valve train. Next question is oil pressure do you have 20 or so at warm idle? 40 or more lbs under load?

Last check will be to look at the condition of your plugs and do a compression check. Do you have a compression tester?
 
Go back to the Castrol 20w50 and run it
 
I've always been told zinc = good, but synthetic in high mileage motors = bad. Something about it cleaning things out and fresh oil finding seals that have long since been dried out. If it isn't marking its territory and doesn't seem to be building pressure in the valve cover then I'm gonna get on the Bossman train of thought, sounds like valve seals are shot.
 
I've always been told zinc = good, but synthetic in high mileage motors = bad. Something about it cleaning things out and fresh oil finding seals that have long since been dried out. If it isn't marking its territory and doesn't seem to be building pressure in the valve cover then I'm gonna get on the Bossman train of thought, sounds like valve seals are shot.
If that were the case, you'd surely HAVE to see smoke out of the exhaust. A quart every 100 miles is a LOT of oil!
I can see smoke from my 80, and it "only" uses a quart per 1,000.....
 

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