![]() ![]() ![]() If you drive a lot in high temperatures go for the higher viscosity grade (10W40), if not use the 10W30 as this has less polymer in it which directionally should mean fewer deposits. The lower number viscosity oils such as 0 W 20 or 5 W30 are designed to give better fuel economy to meet CAFE standards and not necessarily give optimum engine protection. Several of the comments referred to which viscosity grade to use, and I would agree with the suggestion of using a 10w40 or a 10w30 oil. ![]() Buy whatever oil is on sale, (again stick to brand names, not "special" oils and you will be fine. ![]() Heavy Duty trucks have much longer oil drain intervals than passenger cars, thus the formula is biased more towards zincs that break down more slowly.Ī passenger car motor oil is more suited to your car, however as mentioned earlier either will work satisfactorily.Ĭhange your oil frequently, (as a minimum follow severe service recommended for your model) this includes both mileage and length of time and you will be fine. Within this family of additives an oil formulator will use. The specific additive is called Zinc dialkyldithiophosphate, commonly referred to as ZDDP. It will work in your car however you can also get zinc additives in any commercial well known brand. Within this family of additives an oil formulator will use a mixture of primary and secondary zinc additives to get the desired level of wear protection both short term and long term. The Rotella T oil referred to in this thread is actually designed for use in Heavy Duty trucks. Click to expand.The Rotella T oil referred to in this thread is actually designed for use in Heavy Duty trucks. 1964 Ford Thunderbird 24,995 434 /mo 90,709 miles Engine: 390 Days Listed 135 Price 991 below avg. ![]()
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