BS6 Tata Altroz diesel engine oil level rises steeply: What to do now

At the time of engine oil replacement, the level of the oil was much higher than the "Max" mark on the dipstick.

BHPian Sameer016 recently shared this with other enthusiasts.

Hi,

My 2021 Tata Altroz diesel BS6 model is experiencing a higher level of engine oil since purchase.

SVC are hopeless as usual. Last year they replaced the injectors but this year too, when the time came for an oil change the oil level was way higher than the Max mark in the dipstick (almost twice above the max mark).

Only explanation I can think of is somehow diesel is mixing with engine oil, causing its level to rise gradually.

Looking for advice on the future course of action.

Here's what BHPian ajmat had to say about the matter:

That is because extra diesel was pumped in to create higher temperatures to regenerate the DPF. The chances are that you use the car for short journeys. You need to give the car a good fast run once a week to let the DPF regenerate properly.

Here's what BHPian PrasannaDhana had to say about the matter:

Sorry to hear about this Sameer. But then the issue can be avoided if you follow what BHPian ajmat has said above.

In almost all Altroz diesel owner groups, over 70% of the owners have this complaint. BS 6 diesels need to run longer distances to stay clog-free.

My Altroz diesel has run 46500 km without a single DPF issue / diesel mixing with oil issue.

Here's what mine looks like

Avoiding short trips, taking the engine to 3000 rpm for a few minutes, a few times a week will be enough to stay trouble-free.

Once you start enjoying that punchy 1.5 turbo diesel in the 2750 - 3500 rpm band, you will keep doing it often. I do it almost daily and I still get 18 kmpl overall actual T2T fuel efficiency. From time to time, it's totally okay to accelerate hard.

Here's what BHPian Kosfactor had to say about the matter:

I would advise you to get some attention from the service manager and get a closure to this issue. Periodically check the oil level after it's fixed.

Previous thread on the same topic.

Here's what BHPian anjan_c2007 had to say about the matter:

Among the perils that come with BSVI diesels! Please get your car thoroughly checked up and have the diesel-oil mixture drained and the oil sump cleaned thoroughly, refilling the engine oil. Please replace the oil filter and other components if any, as required. Else, starting with the head gasket, other components could get damaged in the long run with excessive oil in the engine.

The engine needs to do a long run of at least 20 kms a week. The issue will be most likely resolved if the car is taken for a long drive every week.

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