Quote:
|
Originally Posted by Bror Jace
Nope, that’s always been a concern … and I think I’ve seen some Chevy V8s using mass-market 5W-30 and even 10W-30 which had thinned and showed high lead levels. However, you are not likely to get into trouble using the factory recommended weights unless you push the interval too far. Current mineral 5/10W-30 oils seems to thin out … even the better ones like Pennzoil and Chevron. Castrol is/was worse than those two and Royal Purple synthetic 10W-30 will thin down to a 20 weight in 1,500 miles of typical street use.  |
So what oil brand/type/weight would you recommend for occasional "untypical" street use, and the generally used 3000 mile interval. Since you've stated the above, I now feel somewhat unsafe driving on the normal low weight oils (5w30-10w30-10w40). What consequences might using 15w40 in an engine such as the VG30 have, and what would you recommend, a higher or lower weight oil, for the turbocharged applications, especially for those of us boosting higher than stock.