OUTLAW EAGLE MANUFACTURING

finally conviced her · Joined: 14 Aug 2006 Posts: 162 Location: Lacombe, AB

What is the maximum constant oil temp a guy should subject a stock ZZ4 to.

MISSBHAVEN · Posted: Sat Mar 21, 2009 9:42 pm Post subject:

Depends if your oil is synthetic or conventional, what weight it is and its quality. A good conventional oil is just fine up to 240 F. An ideal temp is around 220F, just above 212F so any water/condensation will be boiled off. A good synthetic oil is good to over 300F.

sandman · Joined: 15 Jun 2005 Posts: 260 Location: The captains table

I have run a zz4 at 240F, pan temp, 175-180F, return to engine after the cooler. Mobil 1.
On mineral oil I was 10 degrees cooler, both at the pan and return temp. It held at this temp rock steady, 5200rpm, 45+ minutes at a time on the longest legs.

Jesse LaForest · Joined: 09 Mar 2009 Posts: 5

Mine runs right at 220 in the pan, figured this was about minimum, water leaving the engine goes through oil cooler then overboard. Have always used Mobil One. Never had a bearing problem, now watch, since I said that I'll lose all my mains in Riggins!
Oh yeah, it's a ZZ4 with Vortec heads, 5200-5275 rpm.