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Patti is now carrying 5 quarts of Valvoline MaxLife 10W40 high mileage oil in her oil pan.

I decided to start using this stuff, because I have to put, on average, about 2 quarts of oil in her between oil changes. I dunno where it's going, could be a combination of leaking somewhere and burning some too.

I think the reason why I've had such bad luck with oil control on this car is because I used to get my oil changed anywhere it was cheap when I was younger. Firestone, Pep Boys, Don Olson, Jiffy Lube, whereever. So I seriously had run about 5-6 different brands of oil through this engine before I started changing it myself and using strictly Valvoline.

I put about a quarter of a quart of ATF in it this morning and did a few errands, driving a total of about 30 miles. I hope this will quiet my lifters down a bit, as they still make noise, only at idle peculiarly.

I'll see how this high mileage stuff works and report back. But I'm fairly certain that in the next year or so, I'm just going to pull the motor, replace every oil seal on it, and put new HLA's in it. It runs great and pulls hard, but it just needs some refreshing on the outside.

5 quarts is that what the capacity is??
My haynes manual does not mention oil capacity ANYWHERE!!! The most important part is left out!?

If you're really running out of oil that badly, you might want to switch to 20-50w. It'll cost you a little in gas mileage, but it'll slow down that oil leaking (turned mine from a drip to slow seep)

Great.

The lifters are tapping WORSE at idle now.

I'm 99% sure I unclogged something I shouldn't have when I used that ATF.

I can take out the low-oil-pressure light sensor and put a mechanical oil pressure gauge in there right? This sounds like an oil pressure issue to me.

I've been using Castrol High Mileage 10W30 for a while now. Never had to add any inbetween oil changes. My lifters don't tap to an annoying level.

Yeah you can put a mechanical gauge there. I don't know what the fitting size would be.

If I'm not mistaken isn't ATF a type of oil (automatic transmission fluid) not a brand. You shouldn't be putting that into your engine. I could be wrong.

Putting ATF in your oil is a oooold trick to try to unstick old lifters. ATF is a detergent of sorts, and it can clean up the internals of your engine pretty well.

In my case, it cleaned them up so well that it probably cleaned out some gunk that was keeping things sealed up

Live and learn, I guess.

1/8" BSPT.

Awesome. Thanks Vikash!