That's why they invented the oil cooler thermostat. There are kits with
a built in thermostat in the sandwich adapter. Also, because Volvo
engines with cast iron blocks have the same thread on the oil filter as
Datsun engines (same as L series anyway) there's another solution. They
have on the 940 engines (dont use the old Volvo type from the pushrod
engines) a sandwich adaptor between the engine block and the oil filter.
This part is connected to the coolant system and will warm up the oil to
90 degrees C (180F) or cool down to 90C (180F) as soon as the coolant
have reached that temperature. It works well in for most conditions you
can get into. I'm shure other brand of engines use this type of oil heat
exchanger too. It might not sound like it's going to work but I have
seen the same method of cooling the oil on expensive exotics with dry
sump oil systems.
Thomas
citerar Graeme Suckling <graemes@saonline.com.au>:
> 'Tis true,
> If the cooler is always in use it is detrimental to the engine as
> descrtibed.
> However if you also fit an oil thermostat, you can ensure that the cooler
> will only get used when/if the oil temp. climbs above say 70C.
>
> Regards,
> Graeme Suckling
> 1965 SP310 - under construction DSOA Member # 112
> 1971 P510 4 door - daily driver, original owner.
> 1972 PL510 2 door - VG30ET on Autogas.
> 1973 HS30/240Z - re-building to 2004 specs.
> http://www.imagestation.com/album/?idB90669159
> Adelaide, South Australia.
>
>
>
> It depends on where you live. If you live where it's very hot and you take
> long drives it could be of value. But if you live where it's cooler it
> could
> be a detriment as the oil won't get hot and all the water and other nasty
> things won't boil out thus providing a sludgy oil
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