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Early Oil Question

GB1

Yoda
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I was working over the weekend on an early MG. It has been sitting for a while and the oil recommended is straight 40w (maple syrup). I was wondering what others run in early cars, if it is straight, multi weight and if so what weight multi?

Thanks,
Patrick
 
Whooo Whoooo Pat. 20w-50w. Boy I got to tell Pat something for a change. That's one for my side. Usually Pat is telling me.
 
Great idea, Patrick. This oughta stir th' puddin' some!

My first B in '69. Ran straight 30W non-detergent Pennzoil in it for 200K+ miles, summer or winter (western PA~ eastern VA).

"Modern" times you find me using Castrol GTX 20~50W. Diesela gets the diesel "Blend" Castrol.

...can't wait for the flurry of opinion!! /ubbthreads/images/graemlins/devilgrin.gif
 
What do you mean by "early" M.G.? Pre-war? Post-war? MGA, MGB, etc? And are we talking engine oil?

MGBs typically do well on 20W-50 or straight 30. Straight 40 can be used for warmer climates, and 10-40 for cold climates, if desired.
 
[ QUOTE ]
Whooo Whoooo Pat. 20w-50w. Boy I got to tell Pat something for a change. That's one for my side. Usually Pat is telling me.

[/ QUOTE ]

Whooo Whooo, Whose 20w-50w oil ? Better go up on the Healey forum and get educated on modern oils. You OK DRe---Keoke-- /ubbthreads/images/graemlins/yesnod.gif
 
Yea right, forgot, use Castrol. I decided to go with what has worked all my life. Now if it was a race engine that would be different.

Not like I got anything expensife in there. Hehe. if cam goes I will put a hot cam in, good excuse.
 
...I'm everso pleased that meets with your approval, keoke...
 
[ QUOTE ]
...I'm everso pleased that meets with your approval, keoke...

[/ QUOTE ]

---------------I just figured you would be DRe , but I didn.t write the book!--Keoke- /ubbthreads/images/graemlins/lol.gif
 
Thanks Guys, I was thing about using some 20-50 (castrol of course ; at Jack).

The straight forty is so thick and I am trying to clean out the old stuff. Putting straight 40 in there and running and draining doesn't seem to do the trick (I get out about two quarts).

Chris it is a prewar car.

Patrick
 
Hi GB1, You must get the engine hot to drain the heavier oils out. If it is cold cover the radiator with a blanket to stop circulating air until engine is at running temp.--Fwiw--Keoke
 
Pre-war cars typically use higher viscosity oils because the tolerances are wider. You need to be careful about switching from one type of oil to another on a high-mileage engine. For example, going from a non-detergent oil like many pre-war cars use to a detergent oil like most modern oils are can knock loose all kinds of grunge in the engine. See if you can find out what exactly was in there before you refill! If using Castrol GTX, you may want to add 1/2 bottle of STP or a dose of SX-UP.

In my TC I run Castrol GTX 20W-50in the engine with SX-UP. Remember that the gearbox will use different fluid than the engine unlike modern MGs.
 
Glad to hear it is running. Now how about some pics of your friends car. I want to drool.

I should think that 20 50 would be fine reguardless of age or condition really but for an engine ready for a rebuild. Ahh, a smoke bomb.
 
Thanks, Keoke engine was pretty warm for draining.

Thanks Chris, it looked like there was straight forty in it. I will probably stay with that, as not to upset him to much.

Jack, no smoke. Needed to make a temporary harness and a gas can IV. He fired right up no smoke at all. Idled fine had good response and the clutch works. The hose for the fuel wasn't long enough to get the gas can off of the running board, and it was getting dark and cold, so we didn't get a chance to slip gears.

It oddly enough sounds good, kinda like an old sewing machine is the best way I can describe it. The overhead cam and drive gear makes for an interesting sound. Boy did I get goose bumps and shivers when I heard him, felt alot closer to Mr. Kimber.

Patrick
 
Oh god, you just gave me the shivers as well.

Glad to hear all is well, and I agree, not a good idea to change oil type or viscosity (sp) on an old happy engine.

If it ain't broke don't fix it.
 
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