Originally Posted By: mustangguy
I'm not too familiar with the usage of diesel oil. So I'd use 100% diesel for the oil change and run it for the standard 3k miles?
Diesel oil contains more ZDDP which your flat tappett engine may need but I would stick to the 30wt grade.
I actually prefer the Amsoil HDD 5W-30 diesel oil to the their heavier Z-Rod 10W-30.
Another option is Joe Gibbs Hot Rod 10W-30 which many speed shops carry.
Or Quakers State Defy 5W-30.
Or M1 HM 5W-30.
I prefer the 5W-30 grade as it's generally a bit lighter although still heavier than the 10W-30 oils back in the day.
I'm not too familiar with the usage of diesel oil. So I'd use 100% diesel for the oil change and run it for the standard 3k miles?
Diesel oil contains more ZDDP which your flat tappett engine may need but I would stick to the 30wt grade.
I actually prefer the Amsoil HDD 5W-30 diesel oil to the their heavier Z-Rod 10W-30.
Another option is Joe Gibbs Hot Rod 10W-30 which many speed shops carry.
Or Quakers State Defy 5W-30.
Or M1 HM 5W-30.
I prefer the 5W-30 grade as it's generally a bit lighter although still heavier than the 10W-30 oils back in the day.