Changing Fluids
#21
General & DIY Moderator
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If you're talking about engine oil, you may want to stick with the factory grade of 5W-40. Regular oils are less expensive, while synthetics offer better heat resistance and longevity.
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Liz Z (11-03-2019)
#22
When using Synthetic MOTOR Oil what are the Choices here . Should I use the standard dept store type like Castor oil , Valvoline ect or use Red Line, Ams oil. or Purple?????
#23
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https://my350z.com/forum/engine-and-...-and-info.html
It's a personal choice and based on my own UOAs, I use Mobil 1 synthetic in my own street and race Zs.
#24
General & Tech Moderator
MY350Z.COM
MY350Z.COM
Red Line has an excellent reputation, Royal Purple does not. The others fall in the middle.
Your oil change interval is way more important than brand-
For conventional oils no sooner than 3K miles, no later than 5K.
For synthetics, no sooner than 5K, no later than 7K.
These are general guidelines for cars driven weekly.
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