Mobil is removing their DTE 797 and Teresstic GT 32 product lines and replacing it with DTE 732. They say that compatibility is not an issue. Anyone have thoughts or experience?
Original Post
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We would expect that would be the case as the manufacturer stated
however we always should bench all lubricants we use so send a sample of each new product to the lab and compare all ratios of additives and we would only expect light difference between the products, any areas of concern then ask the rep "how come?"
It is alaways very useful information to bench mark all lubricants used on your site as then we can compare the new with the used and if we note the loss of EP additives for example then we can be proactive and check why those additives are depleting before and adhesive wear develops
Regards Rob S
however we always should bench all lubricants we use so send a sample of each new product to the lab and compare all ratios of additives and we would only expect light difference between the products, any areas of concern then ask the rep "how come?"
It is alaways very useful information to bench mark all lubricants used on your site as then we can compare the new with the used and if we note the loss of EP additives for example then we can be proactive and check why those additives are depleting before and adhesive wear develops
Regards Rob S
I've been told that ExxonMobil has done compatibility testing with their new DTE 732 product on several existing new and used products and their tests results indicate good compatibility. It is always important to ensure that your used oil is in satisfactory condition before you introduce new additive chemistry to it.
A good potential testing reference for you is:
"ASTM D7155-06: Standard Practice for Evaluating Compatibility of Mixtures of Turbine Lubricating Oils"
A good potential testing reference for you is:
"ASTM D7155-06: Standard Practice for Evaluating Compatibility of Mixtures of Turbine Lubricating Oils"
yeah i've read similar things in different trade publications and magazines that i have seen
Over the years the Turbine Oil has evolved from a Group 1 straight mineral with good demulsibilty to a Group 2 with non-ZDDP anti wearpackage. If I can recall correctly, Indian Turbine Mnfr (BHEL - Bharat Heavy Electricals Ltd) found increasing wear in the gear/vane pump for oil circulation. Consequently the specs were upgraded to include anti wear package in the newer installations.
Hussam
Hussam
