I emailed Royal Purple because I wanted to check with them before going conventional on my new car and was surprised to get this response:
"Currently there are two versions of the Royal Purple SAE 5W-20 API street oils in circulation the older API-SL formulation and the newer API-SN formulation. If you pick up the later Royal Purple SAE 5W-20 (part #01520, quart bottle) API-SN oil you will have the latest and most current API version of the Royal Purple oils. Chrysler cannot void your warranty in the USA, for not using their oil, if you are using a current API-SN / GF-5 specification Royal Purple 5W-20 oil. The Royal Purple 5W-20 oils you find on the shelf all should have the API starburst seal.
The back label of the new bottle should have the information on it that you desire to show to your dealer for warranty compliance. If you periodically check on our website in the coming weeks, the product data sheet will be posted as soon as it becomes available.
Thank you for choosing Royal Purple and have a great day!"
Cool. I've always wanted to give Royal Purple a try...
"Currently there are two versions of the Royal Purple SAE 5W-20 API street oils in circulation the older API-SL formulation and the newer API-SN formulation. If you pick up the later Royal Purple SAE 5W-20 (part #01520, quart bottle) API-SN oil you will have the latest and most current API version of the Royal Purple oils. Chrysler cannot void your warranty in the USA, for not using their oil, if you are using a current API-SN / GF-5 specification Royal Purple 5W-20 oil. The Royal Purple 5W-20 oils you find on the shelf all should have the API starburst seal.
The back label of the new bottle should have the information on it that you desire to show to your dealer for warranty compliance. If you periodically check on our website in the coming weeks, the product data sheet will be posted as soon as it becomes available.
Thank you for choosing Royal Purple and have a great day!"
Cool. I've always wanted to give Royal Purple a try...