FYI anytime you see a product packaging change you should assume the product has changed because 99% of the time the product has indeed changed.
Quote:
Originally Posted by Jake Raby
The different generations of DT40 are all compatible, so crossing them in the engine is fine.
That said, DT40 was NEVER developed for track usage, be it AX, DE or etc. We have developed XP5, XP7 and XP9 for those roles. These XP oils should always be used on the track, under all circumstances.
There's been a total of 5 different generations of DT40, the bottle doesn't always change with a reformulation.
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Jake that is the biggest load of crap I have ever heard, I've been involved with racing engines for years including Indy car. If what you say is true then the dt40 oil is total crap and should not be used in a lawn mower. You are now in the Snake oil salesman category in my book. You obviously are selling based on the fact that an idiot is born every minute, and are obviously a lot of idiots who own Porsche vehicles. A fool and his money are soon parted.