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Did I ruin my R410 manifold gauge set by using it on R134 system?
One of our cars (2003 BMW i330) needed a refrigerant recharge- it uses R134.
I recharged the system with R134 using the manifold gauge set that I'm am planning to use to nitro pressure test and triple evac my new LG minisplit next weekend.
The thing is... in recharging the BMW with R134... I can now see some traces of the R134/oil in the gauge site glass.
Did I ruin the manfold set and hose for R410 by using it on a R134 system?