10W-40 ? and extra ZDDP ?
02-13-2011, 01:47 PM
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10W-40 ? and extra ZDDP ?
Im thinking of going to 10W-40 "Maxlife" motor oil, maybe with a quart of Valvoline "Synpower" for its ZDDP.. that, or getting Redline "break in additive" IIRC these engines need more ZDDP, do they not?
I have Maxlife 10W-30 in there now.
10W-40 is good for this car? Yes im in a hot climate, i heard that matters, or it used to ?
I have Maxlife 10W-30 in there now.
10W-40 is good for this car? Yes im in a hot climate, i heard that matters, or it used to ?
02-13-2011, 03:13 PM
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Car: 88 Firebird.
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 9 Bolt, 3.27:1 Diskbrakes
Re: 10W-40 ? and extra ZDDP ?
I've been running 10W-40 all year round with a bottle of STP oil treatment for the extra ZDDP. I've never had any problems or metal in my oil.
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