Grant's advice is good. My update is that I've now flat-towed our 2008 manual Jimny for 30K+ km since new and driven it for a further 63K+ km and no issues. Just replaced the tyres last week after a combined 96K km and always ensure to stop and run the engine for a few minutes every 200-300km of towing. Can't say what you should or shouldn't do, but I have no complaints.
7m Fuso wide body, 420W solar, 230 A/h batteries, 2kW Eberspacher, 255L 230V Samsung fridge, 400L topbox, 195L fresh, 200L grey, Suzuki Jimny toad with 4.7m OK Prowler fishing kayak, MTBs.