The Laminova setups I'm talking about above are cooling engine oil (and/or other things in the case of dual coolers, e.g. trans fluid) using the engine's coolant. The coolant will be colder than the oil in any high-heat scenario for the engine. If the radiator can't handle the heat (water temp too high), you upgrade the radiator. If the transfer isn't efficient enough (engine oil still too hot, but water temp is fine), then you need more transfer (larger oil<->coolant exchanger).
We don't have enough data points to say anything definitely, but I'd be surprised if anyone runs into hard limits on this where an upgraded radiator and a larger Laminova unit can't handle their temps. I'd try it myself but I already have a working Setrab oil<->setup and I've got 200 other projects lined up before I get around to reworking my oil cooling, unless it becomes a problem.
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