jim-81

ok, at the risk of starting an 'oil war' thread, I have a question on what type of oil to use after break in. I just installed a new cam and hydraulic flat tappet lifters and did the start up with royal purple break in oil with Comp cams break in additive and she started and ran fine. So now I will change the oil out. My question is do I need to continue using the break in oil, or just go with synthetic. I know there are many different opinions on this and just need some basic advice. My cam lift is 'only' 477/.480 so nothing drastic. Do I:

• use break in oil again for the second oil change
• use a good synthetic with comp cams additive
• just use a good synthetic and good to go from there

Thanks

jb78L-82

I used driven conventional break in oil and was told by the builder to use driven conventional oil 15w-50 for at least 1,000 miles before using a synthetic...I have a roller cam...525/.525 lift

76strokervette

After you get the rings seated I would go with amsoil z rod oil.It is designed specifically for the classic flat tappet market.

jim-81

I didn't mention bottom end is existing. I just put in new cam

7t9l82

the amsoil would be good as would any synthetic with enough zinc. i use valvoline Vr-1 synthetic racing oil, but next oil change im going to the amzoil.

C66 Racing

AMSOIL Z-ROD 10w30 Synthetic Motor Oil (Product Code ZRTQT)
(zinc – 1440 ppm, phosphorus 1320 ppm)

More than happy to get AMSOIL products for forum members at dealer wholesale pricing, about 25% below retail, via the AMSOIL Preferred Customer Program. Drop me a PM if interested.