break in

[MichaelH]

Tranny no, but I changed my oil at 1000-1200 and my rear end at around 3k

[Stephen12ZL1]

Originally Posted by jingnai2

I have the manuel transmission on my car, just wondering if is necessary to change the transmission oil as well with the engine oil and the rear diff oil for the first 1500 miles maintenance

Agreed...the manual or auto tranny is ok at 1500 miles to leave the factory fill. My car is an A6 and it still has the factory fluid. I may change it this winter.

[2014CamaroZL1]

I vote no to the CAI during break-in.
Probably better not have a more lean mixture during that period.

[DESERTDOG]

On the engine oil, GM recommends their Dexos brand 5W-30 weight...everyone use that? Or go with synthetic Mobile 1, Royal Purple...

[MichaelH]

Originally Posted by DESERTDOG

On the engine oil, GM recommends their Dexos brand 5W-30 weight...everyone use that? Or go with synthetic Mobile 1, Royal Purple...

I use Royal purple personally, have on all my performance vehicles

[DESERTDOG]

I use Royal Purple in my Mustangs, 2001 Roush and 03' Cobra...works well in the modular motors.
When you look on the GM Dexos site, under Licensed Brands, Royal Purple oil is not on the list. Mobile 1 has several parts, as does Havoline and Shell...others I don't reconigse.
Dexos1 is what the ZL1's are scheduled for...5W-30. Would hate to replace that LSA engine.

From the GM Dexos Web Site:
What you need to know about dexos®

GM manufactures cars and trucks in 34 countries and sells them in over 140 countries. These vehicles contain an array of more than 20 different engine sizes. To function well and to last a long time, these increasingly high-performance engines need a consistently high-quality oil, and that quality and uniformity needs to be available anywhere in the world.

The dexos® specification is uniquely designed to complement the exacting requirements of GM's advanced engine technology. The specification has gone through an extensive developmental and testing process. It requires a number of proprietary tests that are not included in current industry standards and sets performance criteria at a level that exceeds many current standards. The result is a high performance fluid providing significant wear protection, improved piston cleanliness, a reduction in volatility and oil consumption, enhanced aeration control for improved fuel efficiency, and better oxidation properties.

GM has found that using substandard oil can affect engine performance and, in the worst-case scenario, may damage or harm the engine. Only licensed dexos® products have been certified by GM to meet the dexos® specification. Only officially licensed products have gone through GM's rigorous testing process, are monitored for quality, and are recommended for use in GM vehicles. Unlicensed product quality and suitability for GM vehicles cannot be guaranteed and, therefore, use of unlicensed products may result in lower levels of performance and engine damage not covered under warranty.

dexos® is recommended by GM for use in all its vehicles except those with Duramax diesel engines requiring the use of API CJ-4 engine oil. dexos® is fully backward-compatible and can be used in older vehicles.

dexos1® is designed for use with gasoline engines and replaces GM-LL-A-025, GM6094M and GM4718M.
dexos2™ is designed for use with light-duty diesel engines and replaces GM-LL-B-025 and GM-LL-A-025.

The dexos® specification and trademark are exclusive to General Motors, LLC. The Center for Quality Assurance administers the dexos® licensing program for GM, and also publishes and monitors licensed dexos® products to assist consumers in making informed decisions when purchasing engine oil to service their vehicle. To view the list of officially-licensed dexos® brands, click on the Licensed dexos® Brands page.

[MichaelH]

Royal purple is just fine actually more than fine for the LSA. Amsoil is also a great oil to use, but isn't on the list. Both those oils exceed GM requirements for oil