Nope, not unless you are going wild on the cam specs.earlier design motor needs ZDDP correct? I'll use Rotella T4 (10W40 summer, 30 in winter) in mine (fresh ford i6) after 1st oil change at initial break in.
Other's thoughts on this for flat tappet, 1969 technology...
I believe vr1 20W-50 also exists as a synthetic... Don't know if it's actually obtainable though
I'd stick with the VR1 and just go to something a tad thinner than 20W50 unless you're tracking the car often. I think Valvoline has a 10W40 VR1. I'd certainly stay away from the M1 garbage in your Windsor, it never faired well in any of my built mustangs.
You'd be fine with a Euro 0w-40 or 5w-40 IMHO, I'd run M1 0w-40 in it and not think twice. Many of the Euro applications were cam-over bucket with sliding followers (flat tappets).no roller cam here.
OP's: "...race goodies and a built motor...mild hydraulic roller cam..."
not my set-up. Mine hasa modern cam (as opposed to it's '69)
w/ a slight lean toward "RV" style. The carb it came with (1v). Up-
grade toa DSII ign.
OK, thank you~
You can typically find the Mobil and Castrol 0w-40's on sale, that's why I mentioned that one.WoW
never thought of that one. Thnx,
Will research w/the above in mind
(ie affordable/value, available, correct 4 my motor).
What companies or how spotted? Any 0W-40, 5W-40 (Oh, I see - mobil1 is a supplier).
SAPS is the sulphated ash level, a "full SAPS" oil has higher SA, but also higher levels of zinc/phos too generally.Y I came here, U guys is da ex-pirts
“...Euro 0w-40 or 5w-40 IMHO, I'd run M1 0w-40 in it.
can typically find the Mobil and Castrol 0w-40's on sale.
run Mobil 1 Euro 5w40 or whatever the 5w40 full syn is called nowadays.
Valvoline also has Synthetic VR-1.
full-SAPS Euro oils ... have higher levels of AW additives (ZDDP) than your typical OTS oils...”
Now what's SAPS & OTS? Dont remember stockin shelves w/european designations or these abreviations. Mobil1, Castrol, Valvoline (in all their grades, synthisity and weights, yes). As the motor was machined, during my assembly and degreeing in the cam, my eyes fell on the diesel oil (rotella T4 for back compatability). Thnx. Now, at this age, I enjoy school alot more. 8^ )