I use Shell Rottella 15-40 in my car. ( use it in all my tractors too and as such its a business expense ) Make sure you check the container for a little gear symbol that says Use in Gasoline engines and make sure you dont, repeat dont use that oil. This advise came form this board so do a search for your topic and you will get a disertation on the reasons but based on very knowledgeable folks here go with Rottella.
"The Blue Hole"
1966 Coupe Project underway
After all the cam failures, I'd only use Rotella T 15-40 diesel oil in a flat tappet cam engine, PERIOD. That is, aside from the 'racing' oils that have retained a high ZDDP and additive content as well.
The squirrels in my head have spoken.
Cobra 5.0L & AOD swap, here we come.
you can debate ect and buy the most exspensive oils ect but im 63 and my dad worked for texaco until his retirement and as such told me of all the research that major oil companies do on their oils and lubricants and for classic mustangs with original type drivetrains 10w30 high detergent(hd) is all you need especially if its an older engine where that type of oil was always used. ask 10 dif people and you will get 10 dif answers. i have never had any type of engine failure and ive logged well over a million miles on older cars. take that for what its worth! wes
I have been using nothing but Castrol 10w-40 in my stock 289 since I bought my Mustang in '98.
I average between 800-1500 miles a year and change the oil and filter (NAPA) once a year.
Have considered going to a synthetic but never have.
The project vehicles:
'68 Mustang coupe, Acapulco Blue, 289, C-4, power steering
'87 Caprice Classic wagon, gold/blonde, 307, power everything (retired everyday driver)
Hopefully a '69 convert or Sportsroof (non Mach or Boss) for next Mustang project.
Trying to find my father's 1973 Mustang Grande he bought brand new. 3F04F126773 last known registration and title was in New Jersey, 1982.
Is shell Rotella T 15-40 diesel oil synthetic? Is it available in most auto parts stores?
You can get it at Walmart and it's conventional.
I read the Hotrod article yesterday and am going to get some this weekend.
68 GT Vert - J Code (1st car I ever drove in '73, dad bought it in '71)
67 C Code Vert Sports Sprint (1st car I ever bought in '75)
06 Vista Blue with Pony Package (1st Mustang I ever bought new)
MCA #49294 Grayson, GA (Atlanta)
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