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Old 02-02-2013, 06:13 PM   #3 (permalink)
kanoshee
EcoModding Lurker
 
Join Date: Jan 2013
Location: roxboro
Posts: 35

cammy - '98 Toyota Camry le
90 day: 29.18 mpg (US)
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i would love to know your results on any future mods i've got a friend with one.
the first number in oil (5w)-30 is only for when the oil is cold, so if you have very short drives then the lower first number may help, the second number is the thickness at operating temperature so the lower it is if you have normal or long drives it'll help more, either way my personal opinion is to just test 5-20 or even 0w-20 and if you don't notice any improvement, go back to your recommended oil. also witch to synthetic oils and lubricants they will help more in the trans and dif than you may think, results can vary but for most diesel trucks it's proven for better mileage i'm not sure how it works but it has always worked in my case except for my 86 Chevy blazer 350,
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