Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: great

As an automatic transmission rebuilder I hesitate to recommend any additives. This is one of the few I would suggest. Many late model transmissions are electronically controlled. What I like about Lube Gard is that it treats the electronic solenoids without affecting the seals. There are products out there that swell the seals and they gradually shear off each time they are applied. Lube Gard is a very well respected product... especially at the reasonable prices you can find on Amazon.