Varnish: It's Coming for Your Gearbox
Вставка
- Опубліковано 4 жов 2023
- Varnish in turbomachinery applications has been a problem for almost two decades now. There are numerous reasons for its appearance, including higher operating temperatures, smaller oil reservoirs and fluctuating duty cycles - but one reason seems to cop more attention than most - the move from Group I to Group II style formulations. If I’m reading the trends correctly, the same factors that have caused varnish to become an issue will start hitting smaller assets like gearboxes, which means the varnish problem will be even bigger. Let’s look at why.
lubrication.expert - Наука та технологія
Thanks Rafe, you never dissapoint.
Likes given. Love the charts and graphics in the presentation.
Very nice info to know, thanks
Do you think aklylated napthalene & esters will be better than pao for reduction in varnish?
based on this.. so using group 1 oil for soft engine cleaning over several thousand kms is better than using fully synthetic oil? because in where i live Indonesia, you can still get group 1 engine oil (Pertamina Mesran)
This makes me wonder about the effectiveness of bypass filtration and extended oil changes. Thoughts?
Thx!
No worries!
Always a pleasure watching your videos.
By the way, on the link at the end of the video, you have an extra colon. It should be (not https:://)
When are you going to do review of DECON products? Or perhaps the whole Solvancer technology review?
Oh good question. I'm going to hold off anything like that for reasons that might become obvious in the next couple of weeks...
TY,,,,,,WOW incredible very interesting great information super kool,
AAAAAAAAAAA++++++++++++ ,keep up the great work
is it possible for a normal person to buy an amount of base stock like the ones mentioned in this video?
Everything is possible for a price. But your question makes me think that you do not actually understand the topic at a basic level.
@@TheDuckofDoom. it was only a question that came to my mind, not something i would actually do.
Can i apply for ICML exams after purchasing the course from your website.Beacuse icml is asking for a training certificate from a registered company from its training partner directory?I am interested to pursue MLA III.
Great question! You can, but I haven’t uploaded MLA III yet, it should be coming in December. ICML just requires you to have a certificate from the training organisation (doesn’t need to be registered) so any certificate is okay, although I’m currently in the middle of the process to get set up as a registered trainer through ICML
@@LubricationExplained Thanks sir for the information
Yair, I hear you... BUT - Doesn't oxidation & varnish occur under higher, combustion & turbo temperatures & conditions?
What would be a max level temp in a gearbox? Remember, No combustion...
170f seems to be a typical sump temperature for a transmission. *edit: at least on a manual gearbox automotive application. Automatic transmissions probably run a little hotter which is why they need a cooler.
Ok. I did ask a leading question. In fact, I have a laser thermometer.
After a hard hill climb, on a 100 F + day; Either manual or auto trans read 140 F.
No varnish. Even so, do regular oil changes. Rather than, push to see how far? :)
@@lesliedsouza4077 I've already learned that lesson the hard way. 5 hours to drop the trans 2 weeks to wait for parts, 10 hours to rebuild and 3 hours to put it back in. It's a lot easier to change the oil.
Ive had a gearbox get hot enough to build enough pressure to blow out. definitely something went wrong that was not normal but we didnt figure out what happend just pulled it apart cleaned it and rebuilt it.
@@lesliedsouza4077 Lower temps reduce the rate of oxidation. How are you suggesting that new fluid will solvate the varnish deposit precursors?
NEVER!!! I change transmission fluid every 12 months, or 12k miles, or every 2 oil changes.