synthetic or no
#3
IMO I'd still use an additive though like EOS or similar along with it.
FWIW I've been using straight Mobil 1 for years. I have a roller cam though.
Last edited by cutlassefi; March 16th, 2010 at 05:25 AM.
#5
With a flat tappet cam, if that's what you have, you need plenty of phosporus and zinc to prevent the cam from getting damaged. Only Amsoil and Royal Purple have the safe amount of those additives for flat tappet cams. If anyone has the specs on any other oils which do, feel free to list the documentation. As of 2009, Mobile 1 and other oils have dropped their levels of zinc/phosphorus in order to comply with federal law. Buyer beware. I now use Royal Purple.
#6
If anyone has the specs on any other oils which do, feel free to list the documentation.
#8
I just use Valvoline 40 weight oil in my GTO and change it and the filter often, never have had any problems and that engine is built and not babied. My engine guy approves and he designed the aluminum heads a lot of the old Ponchos use now, been 14 years and it's runs like new. You can worry about some of this stuff too much, I never see or hear of all these problems they talk about, not like you're going to live forever anyway.
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May 12th, 2011 04:23 AM