They don't become 30W. They just protect like 30W. From: Ken Ames Subject: Re: [Amc-list] Spring Flush To: "AMC/Rambler owners, drivers and fans." Message-ID: Content-Type: text/plain; charset=ISO-8859-1 But 5w30 and 10w30 are both 30 weight when warm. The 5w will get to the bearings faster than 10w when cold and might help keep those clearances from getting bigger. : ) Ken _________________________________________________________________ Windows Live™ SkyDrive: Get 25 GB of free online storage. http://windowslive.com/online/skydrive?ocid=TXT_TAGLM_WL_skydrive_032009 _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list