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A reader asks: My daily driver pickup has a Chevy 283 engine with flat tappet cams. I use this truck all winter and it regularly sees sub-zero cold starts. So, I need a high zinc oil that flows fast in the winter. Will AMSOIL Z-Rod 10W-30 work well for winter use? Our answer: AMSOIL Z-ROD […]
A reader asks: Regarding AMSOIL oil filters for Harley-Davidson engines. What is the by-pass spring setting on these filters? Our answer: AMSOIL Tech Services tells us that the by-pass spring pressure setting on both the EAOM134 (black) and EAOM134C (chrome) is 11-17 PSI. This may seem like a wide margin, but that’s the only number […]
AMSOIL has made an addition to the Z-ROD Synthetic Motor Oil Series. Z-ROD is now available as a 10W-40. Z-ROD is also available in 10W-30 and 20W-50 grades. About AMSOIL Z-ROD Synthetic Motor Oil AMSOIL Z-ROD is designed from the ground-up for classic cars and street rods. There are two main features that make Z-ROD […]
A reader asks: Can I use 75W-140 gear oil in my 2007 Harley-Davidson Road Glide transmission? Some say that the heavier oil quiets down the transmission. Is there any problem with this? Our answer: It is perfectly acceptable to use 75W-140 gear oil in Harley-Davidson transmissions. But, do consider that 75W-140 is much thicker than […]
The oil change interval for CVT transmissions varies for each automaker. Below is a list of car brands and models along with the suggested CVT fluid change schedule. CVT fluid certainly wears out over time. It should be changed much sooner than automatic or manual transmission oil. CVT fluid has to be in acceptable condition […]
Over the years, we’ve posted a number of articles discussing the use of synthetic oil in Harley-Davidson motorcycles. Here are all of the links to these articles on one page. If you have questions on any of this content, feel free to give a us a call or contact us using the form on this […]
A reader asks: I’m doing the three main fluid changes in my 2005 Harley Fatboy. For the primary, I have used AMSOIL Synthetic ATF in the past. Is that a good choice? Our answer: The use of automatic transmission fluid in Harley-Davidson primary chaincases has been a hotly debated issue for many years. Automotive ATF […]
Oildepot.ca now offers engine coolant kits for sale in Canada. The coolant samples are analyzed by a lab in Edmonton. This comprehensive procedure can test ethylene glycol or propylene glycol used in gasoline or diesel engines. This testing is performed at the same lab that conducts the oil analysis service we offer. For those simply […]
A reader asks: Did you hear that Harley-Davidson has a new oil filter for Milwaukee-8 engines? Apparently, it’s 1/2” longer than the previous oil filter. Is AMSOIL going to spec a longer oil filter for the Milwaukee-8 engine? Or is it even necessary? Our answer: AMSOIL is not changing their oil filter recommendations for the […]
A reader asks: I’ve got a 2019 Harley-Davidson Street Glide with the Milwaukee-8 107 engine. When using conventional 20W-50 oil, I hear a valve ticking noise at about 2100 RPM. Will AMSOIL Synthetic 20W-50 cure this noise? Our answer: Some customer feedback seems to suggest that this particular valvetrain noise disappears once they switch to […]
