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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…
A reader asks: I’ve got a 2019 Ram 2500 with the 6.7L Cummins diesel. My manual says to use 10W-30 motor oil meeting the MS-10902 or API CJ-4 specification. I’m used to running a 5W-40 or 15W-40 in my previous trucks. Isn’t 10W-30 a bit thin for this engine? Our answer: We can assure you…
A reader asks: I’ve got a 2013 Ford F-150 with 86,000 miles. The rear differential has developed a chattering noise when taking slow corners. I have never changed the gear oil. This is a limited slip differential. Would changing the gear oil cure this noise? Our answer: While we can’t say for sure, it is…
A reader asks: I just bought a 2011 Yamaha Apex LTX snowmobile with the 998cc 4-stroke engine. The manual suggests using a 0W-30 motor oil meeting API SG (or higher) and JASO MA. All I can find locally is a NAPA Synthetic 5W-30. This is basically a car engine oil. Is it OK to use…
AMSOIL Dominator Synthetic 2-Stroke Racing Oil could be considered the best product in its category on the planet. But we spend far more time talking customers OUT of buying Dominator for snowmobiles than selling it. Let us explain. Dominator is designed for 2-stroke racing engines only. It is made for very hot operating temps and…
A reader asks: I‘ve got a 2011 VW GTI with the 2.0L turbo engine. It requires a motor oil that meets the VW 502.00 specification. The AMSOIL application guide suggests that I can use ether the European Car Formula Improved ESP 5W-40 or the European Car Formula Classic ESP 5W-40. What is the best oil…
What is the cheapest and easiest way to upgrade your snowmobile? That’s simple and it’s no contest: synthetic oil. Some say synthetic oil is too expensive? No. It is literally the cheapest upgrade you can make to your snowmobile. The benefits far out-weigh the modest cost increase over mineral snowmobile oil. Why synthetic oil? Your…
A reader asks: We have a variety of compressor and hydraulic systems in our plant. Our technicians frequently complain about difficulty with seeing clear oils in sight glasses. We’ve even had situations where production has been temporarily halted because we mistakenly believed that a reservoir was below the safe level. Do you offer a coloring…
A reader asks: I’ve got a 2018 GMC Sierra 2500 with the L5P Duramax diesel engine. I see that 15W-40 oil is suggested for this engine. Can I use 5W-40 in the winter? Our answer: Yes, you can certainly use 5W-40 in winter (and summer) in your Duramax. While 15W-40 is suggested as the predominant…
A reader asks: I’ve got a Ducati Monster 1200. AMSOIL Metric 15W-50 Synthetic Motorcycle Oil is suggested for this model. This engine revs up to over 9000 rpm, so it needs oil with good wear protection and foaming resistance. What is the zinc and phosphorus content of this oil? I can’t find this information anywhere….
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