Single weight or multi grade oil

[Mitch//pa]

i use 15/40 with no filter... guess i'm screwed
or
maybe thats why my cars dont drip

[BILL WILLIAMSON]

Originally Posted by Mitch//pa

i use 15/40 with no filter... guess i'm screwed
or
maybe thats why my cars dont drip

Duz Pennzoil, multigrade go BAD, jist sittin' in Vermin's hibernating power plant? Gregg put it in a year & a half ago. When Kyle's in my garage, he WHIRRS the starter, to see if my Optima's still up.
Bill W.

[Patrick L.]

Originally Posted by Mitch//pa

i use 15/40 with no filter... guess i'm screwed
or
maybe thats why my cars dont drip

Well, then, so am I.

[Mitch//pa]

Originally Posted by BILL WILLIAMSON

Duz Pennzoil, multigrade go BAD, jist sittin' in Vermin's hibernating power plant? Gregg put it in a year & a half ago. When Kyle's in my garage, he WHIRRS the starter, to see if my Optima's still up.
Bill W.

I would dump it before start up
Oil is cheaper than engines

[BILL WILLIAMSON]

Originally Posted by Mitch//pa

I would dump it before start up
Oil is cheaper than engines

NOOOOT EVEN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!! IT HASN'T EVEN BEEN RUN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Dad CHEEP.

[maxandmickey]

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10w 40 is what I use.model a loves any oil.

[theHIGHLANDER]

Don't use synthetic for the first running of the engine. You need to speak to your builder about that, but the reason I mention it is that it will inhibit seating of the rings. New ring material and it's required finishes actually seat very quickly. In some cases a matter of minutes. That's all I have for this one, and I too run Rotella. Can I get in the "screwed" club?

[Royce P]

A common misconception.

Non detergent oil is something I would not use in my lawn mower which, by the way, has no filtration either. Detergent oil keeps oil residue such as paraffin and sludge from building up on every surface inside your engine. It is superior in every way to an equal grade of Non Detergent oil, regardless of whether the engine has any means of filtering the oil.

Originally Posted by J Franklin

Non detergent oil is for engines without oil filtration.

[Terry, NJ]

I once had a 62 F 600 14' box van with a 6+ -1 rear. I calculated the engine had twice the wear for the mileage on the clock. Anyway it was a 6cyl with a bad rear main leak. Short trips of few miles would use a qt or more. I was using 10-30. I went to a farm sale and bought a 55 Gal. drum of 30#. I began feeding the 30# into this leaker and guess what, The leaking was reduced to about half what it was. I was about as happy as I could be under the circumstances. Moral, If your Mod A has a bad leak, use 30# or 40#, it will stay longer. Otherwise, I would use a modern multi grade oil.
Now i'll tell you of a 53 Flathead was keeping the streets wet with oil until we acquired 10 gals of USED 10# vacuum pump oil. The Vacuum pump oil did the same! It cut the consumption in half or better. Who'd a thunk it? Money? what was that? We'd take and try anything that was free.
Terry

[Patrick L.]

Originally Posted by Royce P

A common misconception.

Non detergent oil is something I would not use in my lawn mower which, by the way, has no filtration either. Detergent oil keeps oil residue such as paraffin and sludge from building up on every surface inside your engine. It is superior in every way to an equal grade of Non Detergent oil, regardless of whether the engine has any means of filtering the oil.

Yep, all small engine makers today say to use a good detergent oil.

[1931 flamingo]

Patrick L.: Probably true but I've been under the impression that a detergent oil used in a non-detergent engine that HASN"T been cleaned out will loosen the "crud, etc" that's built up over the years.
Paul in CT

[Patrick L.]

Originally Posted by 1931 flamingo

Patrick L.: Probably true but I've been under the impression that a detergent oil used in a non-detergent engine that HASN"T been cleaned out will loosen the "crud, etc" that's built up over the years.
Paul in CT

Thats not really what we were talking about, but, I've always heard that too. I've found it to be an old wives tale.

[Terry, NJ]

In an engine that's all sludged up, The most it can take is the surface area or the contact zone. Detergents in oil are not solvents. Detergents are not a soap. They are agents, Chelates (Originally, Ethymine ,Diamine, Tetracetic acid SP) that hold the dirt in minute suspension. This allows it to be flushed out and not gather in the bottom of the oil pan.
Terry

Originally Posted by 1931 flamingo

Patrick L.: Probably true but I've been under the impression that a detergent oil used in a non-detergent engine that HASN"T been cleaned out will loosen the "crud, etc" that's built up over the years.
Paul in CT