Techron OK to add? Engine sounds noisier.

1995 BMW 525iT 126,000 mi. 2.5L 6

I just bought this car. It was running fine, except maybe a little hestation accelerating fast onto freeways.

I decided to add Chevron Techron, 1.5 bottles to an empty tank then filling it.

It seems the engine sounds more "whiny" (hopefully I don't) now after using the product. I noticed this almost right away, maybe after 25 miles. It's louder at the same rpms, more high-pitched. Car used to run pretty silently.

Can it be the product had anything to do with this?

I will get an oil change in next few days, as the gas has been refilled, to make sure there's no run-by of the techron into the engine.

Car seems to accelerate a little better now.

Thank you,
lesliem

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