on twin engine boat, one engine down, how hard to push remaining engine?

[satbeachbill]

Have twin Merc 300 V8's. With one engine down, how hard can I push the remaining engine without hurting anything? A "limp home" speed is 2000 rpm, where it wants to start planing, which keeps the water temp @ 138. Oil temp @ 170. Boat will plane @ 3200 rpm, water temp doesn't change, but oil temp climbs and can reach 180-190. That's when I back down. And that's my concern, what is OK?

2B595416
2B592969

Thanks,
Bill

[EuropeanAM]

You're still fine there. Engine calibration has specific thresholds and will advise if oil temp is too high (would also enact engine guardian).

[satbeachbill]

Thanks!