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So, within that, it is more than possible that, for some uses, the OEM cooling system is underspecified for what the vehicle will be doing, as the system is optimised for the intended vehicle use, which, in most circumstances, means more than half vehicle power is only used for a few % of the...

It's probably just high temperature silicone, same as is sold for gasketing use on engines?

Apologies for the late reply, I had to go on the naughty step for my unacceptable language. Although, give the moderator used the same language when putting me on the naughty step, it can't be all that unacceptable.... Originally Posted By: SteveSRT8 Originally Posted By: PhillipM As opposed to...

The issue will be when that engineer has to go and explain to the accounting department about why he's just made them buy a million extra litres of oil for the vehicle run just because he rounded up the oil to the nearest litre and made the sump a little bigger to suit.

Originally Posted By: toneydoc Goes like this. Oil and petrol are expensive in Europe. More so than here in the USA. When I was stationed in Europe, gas cost about 2-2.4 times cost in USA. Oil for engines was 3-4 times more expensive IIRC. Folks in Europe can and do run their engines and cars...

As opposed to someone that just comes into the thread, tells everybody they don't need it, makes no effort to discuss the product, and just keeps cutting in with his own jabs and no facts too? At least I tried to keep it on topic, what did your little posts add? Same [censored] I had from you...

Steve - track tends to be high loads, yes, but not for long periods and at very high airspeeds - cooling is generally less of an issue for a car on tracks than it is for a roadcar unless highly modified - that V10 racer I showed you a while back wouldn't even get over 85*c on the race circuits...

Lifting the trailing edge of the bonnet on most modern cars will have the exact opposite effect, as it's at a higher pressure than the usual underfloor exit.

Well overengineered to cope with the abuse it's likely to take then, but I wouldn't try that with the M5

Well, unless you like running on the cooling fans all the time, no vehicle can be designed for every situation, it's impossible, because if the airspeeds are low and the power output sustained (towing, autocross, etc), they're going to have to assist the radiator. Personally, I prefer not to...

Originally Posted By: SteveSRT8 Nonsense^^^ Factually most all modern vehicles in this country have EXCESS radiator and cooling capacity as they are tested to perform at the highest ambient temps on earth. Death Valley anyone? Not nonsense, high ambient temperatures, yes, but how often are...

Might be worth checking the power state isn't in high performance mode...

Depends on the engine, most engines these days have undersized radiators because OEM's know they'll spend 99% of their life well under full power output, so they package a smaller rad in there. Obviously if you're tracking the car, or racing, chances are the thermostat is going to be full open...

Originally Posted By: Shannow So the goop has to lower the specific heat of the water during warm-up, so that a fixed volume of coolant gets to temperature faster. Then it has to raise the specific heat during normal operation to carry more heat (while running cooler), and taking in all that...

Originally Posted By: kschachn Makes me wonder how I got along all these years without it. But how does it do that? The only way to make it warm up faster would be to inhibit heat transfer to the cooling system. I thought the product was supposed to increase heat transfer? Since the coolant...

Millers used to do a 'black moly' diff oil, but of course, it had big warnings about using it in synchro boxes and clutch packs without making sure it was compatible first.

Apologies for the infomercial link, but the new Millers bottles are pretty good, I save them and refill with other oils as they make hard to access filler caps far less likely to get messy! https://www.youtube.com/watch?v=cPhzfN5sipo

I'll give it a go, I've got some good jump leads just in case.

My go to for 75w-80's with reluctant shifting is either Total BV75w-80, or Castrol Syntrax B

I know a lot of garages in the UK use Wurth as they sponsor a lot of the schemes so they're required to. To be honest, never seen it make a blind bit of difference, I've done plenty of injector replacements by cars that haven't had it, and cars that have gone to the local garages all their life...