Guys, I want to post my 7 years review about Shell - Helix Ultra Synthetic - 5W 40 oil and how to flush your engine properly. Before I begin, just want to thanks GTO
for his advice about 8 years ago for switching to fully synthetic oil.
I used to buy this oil for about Rs.1800 in end of 2006 now it cost about Rs.3800.
Here are my pics from another thread.
Seal. Also notice the plastic seal which is now broken after opening the can. This seal should give you one pointer towards making sure that oil is genuine.
I am using this oil in my Honda city since last 7 years and my car's engine have never faced any problem
, so from my experience you may just take my word for it. Today after completing 86000 kms and 9 years my cars engine still runs like a brand new. I have also learned very good things about Mobil1 and it would have been my first choice but its not easily available in my area hence I never used it.
I also recommend occasionally flushing your engine before oil change. What is engine flush?
Well, I am not an expert when it comes to cars but I will try my best to explain you about engine flush and flushing process. From what I learned from my research is, engine flush washes out bad things from your car engine like detergent washes your cloths in your washing machine and remove all bad carbon deposits / oil deposits from the engine. Usually engine oil and oil filter together does the same job but flush do the same thing in 10 minutes what engine oil do in 1000-1500 kms. So If you are using synthetic oil and changing it at proper intervals you may not flush your engine as it will be not required.
It is specially recommended when you are changing oil after long time or switching from semi synthetic to fully synthetic engine oil.
Note: some time flushing engine in very old cars or in the cars who have done long runs (say above 150,000-200,000 kms) can actually harm your cars engine because old engine parts wear out and develop cracks and gaps due to fiction and these carbon deposits inside car engine keep these cracks and gaps sealed and provide support to internal parts. When you flush your old cars engine it will remove these bad deposits and hence will open up these gaps and cracks damaging your car engine. So proceed with caution in old cars. My car has done 85000 kms and is 9 years old and I have faced no such problems but again my car is very well maintained car and runs daily. Engine Flush Summary
- Engine Flushing Removes Oil Deposit and particles (black thing) from your car engine
- Cleans car engine and parts from inside
- Will Keep new oil clean
- Highly recommended if you are switching from semi synthetic / engine oil to fully synthetic engine oil
- Highly recommended when you are buying second hand car and changing oil for the first time
- Highly recommended if you are changing oil after long time
Now since we know what is engine oil flush (at least in lay man terms) let me explain you how to properly flush your engine oil. Without properly flushing technique you will loose all the benefits of engine flush and waste your money. To my surprise most mechanics / service advisers who suggest engine oil flush don't know how to use it properly!
I used wurth engine oil flush in my car and I am very happy with the results. Cost Rs.500/-
How to flush your petrol car engine
. I am not sure about at what RPM they flush diesel engine, so this guide is not about diesel cars. Btw, this is how I flush my petrol car's engine and I faced no problem.
- Warm your car engine for 5-10 minutes (its a must, don't skip on this). If you just drove your car from your home to your garage and your car engine is warm, you may reduce it to 5 minutes.
- Now shutdown the engine, open the bonnet and add engine oil flush after removing engine oil cap.
- Crank the engine and run it on idle for 2-3 minutes at 1000rpm
- After this Run your petrol car engine at 1800-2000 rpm for 10-12 minutes. This is what mechanics / service advisers don't know. They just leave car idle at 800-1000rpm for 2-3 minutes and drain the oil, which is not enough for flush to do its job properly and hence all money spent on oil flush is wasted.
- Do not, I repeat do not rev your engine above 2000 rpm because engine flush will make engine oil thin and hence will not be able to provide proper protection to your engine against fiction thus can damage your cars engine at high rpm.
- Do not add flush to your car engine and drive down to your local garage which is 5-15 minutes away. Don't play with your cars engine. I am telling you in advance because there is some one who asked this question in engine oil flushing thread.
- Shutdown the engine, drain old oil, remove oil filter
- Leave the car for 5-10 minutes so that every drop of oil comes out from the engine
- Put the compressed air in the engine through engine oil cap on the top for 2-3 minutes so that remaining oil in the bottom with lots of black slug thing drains out from engine. You will also notice steamy kind of air coming out from engine (remember we ran it hard for 15 minutes so it may be little hot). Don't worry about it, it is just a compressed air coming out from the gaps.
Here is the slug which came out from cars engine!
- Add new oil filter and finally add new oil slowly after checking for any leaks
Here is the oil stick from my CNG Car after 1100 kms run after oil change. Disclaimer:
Above article is just for knowledge purpose, please consult your cars manufacturer for further advice specially when your vehicle is under warranty.