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I want to mix 75W-90 and 75W-110 from Amsoil. The point is that my rear differential actually requires Castrol BOT 720 with a viscosity of 18. W110 has a viscosity of 20, while 75W-90 is 16. As a result, when mixed, it should come out to exactly 18. What do you think?

Hi, Has anyone used Amsoil Severe Gear oil 75w90 or 75w110 in Limited Slip Differentials? Does it work well for them?

First 100 000 KM auto was in the US:) There were 3(!) oil changes according to carfax (and others history services thad I checked before I purchased the car). Then two 10 000KM OCIs in Ukraine with Ford Formula F 5w30 129 500км - Pennzoil Ultra Platinum 5w30 137500км- Castrol Edge Extended...

Some of you know that I test fuel cleaners for PEA/PIA. I buy cleaners, test them, then pour them into both my cars (Range Rover Evoque 2.0 petrol & Range Rover L405 4.4 diesel). Couple years ago I had Cayenne and I did UOA after using 6 cleaners per interval - everything was perfect, no...

Hi guys! I’ve tested different cleaners and different fuels by Deposit Control Additive in Fuel Test Kit PN 995DCA from BG. Yes, I’m from the EU, so I’ve tested cleaners and fuel (Shell, BP) from european countries, but I hope you will find them useful. I’m not professional tester and bloger:)...

Here I used 6 PEA cleaners here (3 KYK and 3 Wynns). OCI 9000 km Perfect UOA from my Cayenne V8 4.8. Redline High Performance 10w40

Hi all from Ukraine! I have two Mazda's, made for USA Market. Also I buy American oil via Amazon, so I have stock of oils like Castrol EDGE Extended Perfomance and now waiting Amsoil SS 5w20. I have 3.7 engine in my CX-9 (2008) So,can you recomend me the right OCI for this engine? I use LPG...