20/50 oil in a CVH, good or bad idea?
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After the engine rebuild I put Castrol 10W40 semi synthetic oil in it. While the car is running fine, it still sound tappety, and gets quite harsh at 2500RPM+. I've asked on some Facebook groups and somebody's recommended using 20/50 mineral or semi instead. Anybody used this in a CVH before?
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i used 20w60 in my 720 hp rb26 engine and it had been useing it for over 10k miles without issues, if will help maintain pressure if youve got a high clearance race engine.
tbh though it shouldnt need thick oil to quieten the tappets down, is the motor holding good oil pressure ?
tbh though it shouldnt need thick oil to quieten the tappets down, is the motor holding good oil pressure ?
Last edited by scoooby slayer; 17-06-2014 at 04:06 PM.
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i have had my astra dti work van from 4 years old and it had done 40k miles when i got it, its now done 183000 miles and the engine and turbo is still untouched, it has been run on 20w40 mineral oil for all those miles at about 7000 miles service intervals.
it has been used all year round for 10 years in it, and all our machines run on it to all year round.
my 720 hp rb26 had been running 20w60 for at least 6 years and over 10k miles and still going strong.
it has been used all year round for 10 years in it, and all our machines run on it to all year round.
my 720 hp rb26 had been running 20w60 for at least 6 years and over 10k miles and still going strong.
Last edited by scoooby slayer; 18-06-2014 at 05:17 PM.
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i have had my astra dti work van from 4 years old and it had done 40k miles when i got it, its now done 183000 miles and the engine and turbo is still untouched, it has been run on 20w40 mineral oil for all those miles at about 7000 miles service intervals.
it has been used all year round for 10 years in it, and all our machines run on it to all year round.
my 720 hp rb26 had been running 20w60 for at least 6 years and over 10k miles and still going strong.
it has been used all year round for 10 years in it, and all our machines run on it to all year round.
my 720 hp rb26 had been running 20w60 for at least 6 years and over 10k miles and still going strong.
-8 ish is largely a lot colder than the uk gets but I'd have to say a 10w to me just seems safer
Last edited by ajamesc; 18-06-2014 at 06:24 PM.
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the engine will run many miles with a 20W-60, no doubt, but the fewest will open the engine to see the mess and how much oil will it burn after some usage? The engine won't explode but the engine wear is huge esp. in winter..... Well, the engine runs don't mean the oil is good, the question is HOW the engine runs and how it looks inside. You can't see it from outside.
Could imagine that the tappets will make noises for 20 sec. on a strong winter day at -20 with a 20W-60
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