4.4 Dry start knock mobile1 0-40

[utahx5]

Ok my test has begun my 2001 4.4 with 70,000 miles has been doing the dry start knock only twice this summer but one it got cold it knocks for about 2 seconds almost every morning I changed my oil from castrol synthetic 5-30 to mobile1 0-40 full synthetic thursday my reults so far 9-28-2007 no knock 9-29-2007 no knock 9-30-2007 no knock 10-1-2007 no knock 10-2-2007 to 10-6-2007 no knock 10-7-2007 well it get really cold last night 31 deg. verry slight knock on start only for about .5 second first time since I changed to 0-40 10-8-2007 to 10-15-2007 no knock at all 10-16-2007 to 10-21-2007 no knock and it is really cold and snowing so far so good 10-25-2007 still no knock 10-26-2007 to 11-5-2007 still no knock seems to be working