Oil Recommendation for 1974 Mopar 318 V8

[Bookmaker]

I recently purchased a 1974 Plymouth Duster 318 V8 Auto. It has only 11,000 original miles on the car and engine. I was thinking I would run Rotella T6 5w40.

Any better suggestions?

BTW: The owner's manual recommends anything from 5w20 to 20w50 depending on average ambient temperatures.

 

[spasm3]

How much will you drive it? If short trips and since its a carbed engine, i might run pyb or other dino and change it more often. The t-6 would work well, just hate to spend more if you change often.
If you get it good and hot on every drive then the t-6 would be ok as you would not have to change as often. I'm not a fan of a long oci on a carbureted engine.

 

[Oldmoparguy1]

Only 11000 miles? Man! What a find. Anything you put in it will be fine. I had a 73 Duster 340. I ran 10-30 or 10-40, whatever was on sale. T-6 will be great!

We need pictures!!

 

[Kuato]

Wow what a find and yes to pics!

T6 is a great choice.

 

[mjoekingz28]

Is your car older than synthetic itself?

Maybe 15w-40.

 

[JR]

SBC 318 are easy on oil. Durable as a rock. Family has decades of service run quaker state 20w-20, and 5/10w-30 the last decade since 20w-20 is gone to the wayside.


Harvey

 

[steveh]

I would worry about synthetic leaking in a 1974.

 

[Merkava_4]

Chevron DELO 15W-40.

 

[Bookmaker]

Originally Posted By: Oldmoparguy1
We need pictures!!

 

[Torrid]

Immaculate condition. Gorgeous!

 

[CT8]

What a find !!!!Enjoy!!

 

[DoubleWasp]

Mother of.......wow! That thing's a beauty!

 

[demarpaint]

Awesome! What a score. The 318 imo was one of the best engines of that era. Enjoy!

 

[SR5]

WOW !! Great car.......such low miles.

Given the recent PQIA test, you could run PYB 10W-30
http://www.pqiadata.org/Pennzoil10W30.html

Super low Noack to keep the engine clean, plus almost 200ppm Moly, 900 ppm Zinc and 100 ppm Boron.

Just change the oil regularly and you will be fine.

Do you plan to drive it much or just keep it for special occasions?

 

[Oldmoparguy1]

OMG! Fabulous!! Is that a resto?? If not, how was it stored. I would love to know it's history..

 

[Bookmaker]

Originally Posted By: SR5
Do you plan to drive it much or just keep it for special occasions?


Show car, occasional pleasure drives.

 

[SR5]

Originally Posted By: Bookmaker
Originally Posted By: SR5
Do you plan to drive it much or just keep it for special occasions?


Show car, occasional pleasure drives.


Excellent

 

[meborder]

If it were mine, I'd use a synthetic blend 10w30. I'd probably give rotella t5 strong consideration.

Why synthetic blend?

Because that's what I've been using since 1996. Why change and use something else now?

 

[NH73]

Originally Posted By: steveh
I would worry about synthetic leaking in a 1974.

Wouldn't that be an issue with group 3 base stock synthetic oils?

 

[Red91]

QSAD in your favorite grade. It's what I'd use anyway. I'd probably use 10W-40.