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Bob O · 08-03-2009, 03:08 PM

I'm also currently using Castrol 5W40 (in an 01 base with 65K on it). I change somewhere between every 5000 and 7500 miles and take it to the track several times a year.

JFP....Would you recommend year round Castrol 10w40 for a car that gets regularly driven in the winter in temps sometimes below O deg F (excluding this last mild winter). Based on your recommendation above my next change (next month) will probably be Castrol 10w40, so I'm curious if I should continue to use it during the winter or go to the 5w40 for the cold weather.

Thanks

Bob

08-03-2009, 03:08 PM	#29
Bob O Registered User Join Date: Aug 2005 Location: Kansas City Posts: 319	I'm also currently using Castrol 5W40 (in an 01 base with 65K on it). I change somewhere between every 5000 and 7500 miles and take it to the track several times a year. JFP....Would you recommend year round Castrol 10w40 for a car that gets regularly driven in the winter in temps sometimes below O deg F (excluding this last mild winter). Based on your recommendation above my next change (next month) will probably be Castrol 10w40, so I'm curious if I should continue to use it during the winter or go to the 5w40 for the cold weather. Thanks Bob __________________ 79 911SC Targa.. gone but not forgotten 2001 Boxster Black/Savanah Beige RoW M030 suspension 7/15 mm spacers Deambered Desnorked SS door sills Debadged Clear tails Technobrace Technobra I'll never own another black car!