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Ask Mobil Archive -
Coking
DateQuestionAnswer
08/12/2008
Any Worries About Oil Coking in a Turbocharged Race Engine?
Hello. I run your 0W-40 in my turbocharged road race engine. Sometimes if I have to shut down hot, I will notice on my data logger later that my turbo oil exit temp hits 250°C! Is this too high? At wh...
The temperatures you are seeing are quite high but not surprising. There are a couple of things you can do to protect the turbo from coking. You are already doing the first thing we would recommend wh...
06/22/2008
Does Mobil 1 0W-40 Make a Turbo Engine Susceptible to Coking?
With my previous stock engine '01 Miata I used nothing but Mobil 1 0W-40 with completely satisfactory results on the street and track for over four years. I have recently replaced that car with a very...
We would recommend you use either Mobil 1 5W-30, which has demonstrated outstanding performance in the HONDA HTO-6 Turbo specification and is recommended for Honda RDX Turbo, or Mobil 1 0W-40. Your fr...
12/14/2007
Will Mobil 1 Cause Coking Deposits in Older Porsches to Loosen?
Many of the older air-cooled turbocharged Porsche 930 engines have some coking from using the approved oils available 20 years ago. I've read website postings that putting these engines on your Mobil ...
Mobil 1 is a strong product and has demonstrated clean-up of deposits in certain applications but in most cases clean-up is most evident in the reducing of sludge and other softer deposits. In general...
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