Alsace_rangie Posted December 6, 2020 Share Posted December 6, 2020 (edited) Not a "which oil" question, plenty of threads. And a lot of info in Old thread. Just opinions on the following situation. So, time for a change of oil, '97 Disco TDI 300. I live in France and getting the recommended MTF94 is not so easy. So went to a local specialist garage, who sold me some oil from his bulk stock, in an un-marked container. Did the change, how long did it take LR to work out the most awkward places to put the drain and fill plug? Then I checked the bill from the garage and noted it was Yacco oil (well respected make) BVX 600. However this is NOT MTF94 spec oil. It's actually 75w90, and similar to Castrol syntrans multi. This is quite a bit more viscous over the entire temperature range. Not too pleased as the old oil recommendation was Dexron III, even thinner, and MTF94 spec was updated to a less viscous standard a few years ago. So my feeling is that going up to thicker oil is a bit odd. Plus getting Syntrans multi is easy and it's cheap! Talked to the garage, and they said that this is what they use. Yacco BVX5 500 is MTF94 compliant but apparently Yacco had sent out s suggestion/recommendation to use the heavier BVX600 oil to help with low temperature sync issues. My understanding is that the oil pump in the R380 is happier with lower viscosities and that low temp gear selection is improved by using the less viscous (than 75w90) MTF94. Garage has offered to change the oil over to the MTF94 compliant BVX500 so can sort this, but any opinions on using the 75w90 and if it should be better for low temp sync? Edited December 6, 2020 by Alsace_rangie spelling! Quote Link to comment Share on other sites More sharing options...
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