ZDDP in oil. Worried?

[ukzz4iroc]

I am hearing more about oil manufacturers reducing ZDDP in oils due to emissions and catalytic convertors etc. Thing is without this additive, our pushrod engines suffer.

What oil is everyone using for their V8's?

[Motown Junk]

Depends if you have a roller-cam or flat tappets.

Flat tappets are the ones that need some type of additive.

For oil, I use Valvoline Turbo (15/50 IIRC)- and put some Lucas Oils cam breakin additive in at every change (4000 miles normally)

[Motown Junk]

That should be cam break-in, not breakin obv

[ukzz4iroc]

Cheers Motown- flat tappets for me. I'm thinking Castrol Classic oils but would like a modern(ish) oil with the additive if poss.

[chevy-stu]

If it's for your IROC, then it has roller rockers from the factory as it's an 88'...

I've got a late 80's block, roller rockers etc.. in mine and I've just started using Gulf Competition fully synthetic 5w-40 as it's half price at Opie at the moment....

[ukzz4iroc]

Cheers Stu- yep you're right, my mistake.

I love your 2nd gen, what a beast!

Also I notice your old white IROC. Did the Hypertech chip make any difference to it at all? Where is this Opie place you speak of? Oil sounds great.

[Motown Junk]

Opie Oil Guru chap on here.

http://www.pistonheads.co.uk/gassing/profile.asp?m...

[ukzz4iroc]

Wow- that is a very useful site. Thanks Motown

[chevy-stu]

ukzz4iroc said:

.. Also I notice your old white IROC. Did the Hypertech chip make any difference to it at all? Where is this Opie place you speak of? Oil sounds great.

The chip was in it when I bought it, so hard to say if there was any improvement over stock.
It was only a 305 with a decent exhaust and K&N air filters, so not massively powerful..

[roscobbc]

Millers Classic 20-50 has ZDDP and relatively inexpensive.

[BobBuzz]

Check out www.camoils.com Collector Automobile Motor Oil a 15W40 high grade mineral oil with over 1600ppm ZDDP specially formulated for flat bottom lifter engines.
Bob

[ringram]

You can also use Mobil 1 racing 4T oil. Also has more Zinc. Though less other stuff which the normal one has which is designed for longer service intervals etc. So the best may be to combine them. Or use an additive etc.

[tortop45]

the oil fitted from the factory in the new chevy camaro v8 engines is mobil 1 .the engines=Ls3 andL99

[chevy-stu]

tortop45 said:

the oil fitted from the factory in the new chevy camaro v8 engines is mobil 1 .the engines=Ls3 andL99

Yes, but they're modern engines. These pre LS, LT, and late gen 1 small block with roller lifters are older designs, particularly the flat tappet ones that ideally need the extra zinc to reduce wear

[ringram]

.. or arguably high lift hard core rollers that get a bit of a pounding with race lobes. They could also do with more zinc.