Oil to use, in Old mustang??

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04-18-2018, 08:34 PM

Sybllyo

Thread Starter

Join Date: Apr 2018

Location: Ohio

Posts: 1

Oil to use, in Old mustang??

What oil to use in 1969 351c engine,,
i heard of mobil 1 diesel truck is higher in phosphorus, zinc

04-19-2018, 04:54 AM

08'MustangDude

Banned

Join Date: Jan 2018

Location: Pennsylvania

Posts: 2,327

Use any "CJ" rated commercial oils; Rotella, Dello, Delvic. These oils are rated for diesel engines and
gasoline engines. Almost all of the newer motor oils have removed the additives which lubricate a flat tappet cam,
so you need the "CJ" rated oil for that motor to save your flat tappet cam. You can buy these CHEAP at
Walmart.

04-19-2018, 08:36 AM

ZEN357

2nd Gear Member

Join Date: Feb 2018

Location: Pittsburgh, PA

Posts: 166

Mobil one Synthetic High Mileage and a K&N Filter is what I would run.

05-08-2022, 08:03 AM

JamesBenedict

1st Gear Member

Join Date: Jan 2022

Location: Florida

Posts: 75

Old cars would use conventual oil, not syntenic with high zinc for the flat tappit cams. Shell Rotella diesel oil has high zinc. The oil is so refined today conventual oil is almost synthetic.

Last edited by JamesBenedict; 05-09-2022 at 07:45 AM.