My RAM takes 5-20 but being an old hot rodder I decided to try a lower viscosity in the winter to see what, if any, difference it made. I know it's a little better flowing on cold starts but was worried about engine protection. My oil pressure was normal and my engine wasn't a bit noisy so I ran it until the weather started warming up here in Va. I am beginning to believe that ANBY Amsoil is great!
Beat performance for getting the most out of engines
By 
JOHNATHON, 
a 
Verified Buyer 
from 
Vista, California  
on 
April 07, 2021
My uncle has over 500000 miles original engine on his Tundra, the same results I seen from my customers who used AMSOIL on their vehicles when I was a auto tech. I started my Toyota Sienna SE on signature series full synthetic, I noticed results right away, smoother running. With perfect preventative maintenance and amsoil I plan on taking my Sienna over 500000. Starting my brand new Camry on AMSOIL right away.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
great product
By 
JOHN, 
a 
Verified Buyer 
on 
April 07, 2021
Amsoil ONLY FOR MY LINCOLN!
I noticed more pep since my first oil change, I take my car and cruise to 110 feels great!!!
motor runs smoother and quieter.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Good stuff
By 
BOB, 
a 
Verified Buyer 
on 
April 07, 2021
Great stuff
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Peace Of Mind
By 
LLOYD, 
a 
Verified Buyer 
from 
Lacombe, Alberta Canada 
on 
April 07, 2021
I have been using Amsoil for many years now and I wouldn't use any other oil. My SUV does not require this quality of motor oil but using it brings peace of mind whether is very cold or very hot outside. The peace of mind is because I know from personal experience that it will never fail me and protects my engine whether its a very cold start or driving in extreme weather of any kind. Thanks Amsoil.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
The Best
By 
CEDRIC, 
a 
Verified Buyer 
on 
April 07, 2021
Very good engine oil. Prevents engine knock on cold startup.
My vehicle usually drives a total of 24 miles a day (12 miles to and from work) and it is a decent amount of stop and go driving. One thing I have noticed is that my Jeep (Liberty with the 3.7) seems to idle a bit smoother when it is colder. The biggest thing I have noticed, is how much less evaporative loss this oil has. Previously, I was using Mobil 1 high mileage in 5w-30 and running the exact same route. After a week or so of driving, the oil filler cap would be coated in moisture and foamy oil (not due to a head gasket leak, the coolant reservoir has no oil and it doesn't leak coolant). I would give it adequate time to warm up before driving as well. This was during the winter, but in the summer/ spring, there would be a decent amount of buildup as well. I took the cap off yesterday and there is very little moisture or foamy oil (it was colder last week, but now Michigan is finally warming up).
Overall, great performance on this oil.
I use this oil for the track day (Summer) season when my car will be out more often and driven harder.
After a summer of tracking my Camaro 1LE, I changed my oil and sent a sample of the used oil to Blackstone Labs for testing. They came back with results commenting that "Our testes concluded that your engine is in extremely great health considering your usage and mileage (45,000miles). Your 3,000mile oil changes are also a factor in your engine's internal health."
Hands down the only oil I use for my car.
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