My car is Sierra Cosworth 4wd -91 ~300 hp and has 100k miles on the clock on stock internals. 10W-50 Silkolene would be the best for me? What other 10W-50 oils are good as the Silkolene has little to none availability back here?
I live in Finland and summertime temperature is beetween +5 to +30 celsius. Car might get limited winter usage when temperatures are 0 to -30 celsius. What kind of oils make the engine noisy when its cold? The ones with smaller 'W' number?