Subdriver

Dan,
Your statements somewhat contradict each other. You say you use, and by implication, recommend Slick 50, then state not to use engine additives. Personally, I concur with the latter...

As an FYI, the FTC sued the makers of Slick 50 for false advertising and the FTC won. See this link: http://www.ftc.gov/opa/1997/07/slick.htm

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danrieke

Sorry. I meant NOT to use oil conditioners and such. The Slick 50 - which I've used in several cars but NEVER on old, tired machinery - is a metal treatment, not an oil treatment.

Site you listed has good info. An attentive reader will investigate alternate sources, as have I. For the GTO, which uses synthetic Mobile 1, Slick 50 recommends their Synchron® Synthetic Formula Engine Treatment. Note... this is not an oil treatment.

Since the 1997 lawsuit, they changed their marketing to make no specific claims of enhanced performance or engine protection. As I said, I've used it successfully and had a good experience.

A check with the local GM shop gave no help. They're tight lipped and will neither confirm or deny its benefits.

I recommend contacting the GTO Association of America on this matter for feedback from mechanics who've used it, and what their recommendations might be.

goat boy

I am 58 yrs old and have been racing for 40 years. I have to take issue with the break in recommendations that your friends and relatives gave you.

While this may have been true 50 years ago, and still may be somewhat true today for race only engines, I think it is bad advice for street cars. If you look at this board there are all kinds of posts about excessive oil consumption in 04/05 GTO's. Most, if not all can be traced to improper break-in. My racing buddy bought a 05 C-6 Vette at the same time I bought my 05 GTO. ..
I adhered to break-in recommendations, he did not. His is an oil burner, mine is not.

I think you gave very good advice on heat cycling and cool down

Technology, materials, tolerances, machining, lubricants, have all changed since the 60's. I am a high speed, long distance racer, open road endurance racing is tough, tough on engines. Just my 2 cents.

Goat Boy

JMVorbeck

You cannot redline the engine unless you have toyed with the programmed limiter, and that will void the warranty. 2500 oil changes on Mobil 1 seems excessive to me, but if you can afford that more power to you. I wouldnt put engine oil additives on my car either, that includes slick 50.

Starrbuck

I agree 100%. I was wondering how you could redline the car with the rev limiter set properly. I change Mobil 1 oil and filter every 3,000 - 5,000 max and I would never use Slick 50.

J.E.T.

Very good info in this post.........having grown up (and owned) a service station I'm pretty anal when it comes to maintaining equipment of ANY kind, not just automobiles. I also advocate Mobile 1 with oil changes every 5K miles (shorter time periods if racing is involved). Shell might have been the official fuel of NASCAR but it's Sunoco now. I use that mostly........depending on availability. New engine "break-in" periods are pretty much common sense. Don't abuse the engine but don't "baby" it either. After the first 500 miles you can add some speed but no burn-outs until after 2,500 miles. This car is meant to be driven fast.......not hard. Take care of it and don't abuse it and it should last as long as the driver.


JET

huskerGTO

My first engine was a fluke... It was an oilburner, piston didn't fit the cylinder to GM's standards. Got the ls2 replaced, and now that I've put on about 2500 miles, I've been hitting it hard, going up TO, but not exceeding the redline. I love it! No suit build up in the exhaust pipes, and not burning up oil as much! Rings must have seated right, and everything is kosher now