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rossocorsa
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« Reply #20 on: April 17, 2017, 05:23:03 PM »

We have had the oil debate before, when Alan scanned in the handbook page which includes 20W50 down to -10. As per my 'tad heavy' comment, this was never meant as a recommendation, just a commentary on what has worked in my, at best, mid life, slightly leaky, 79hp (maybe), summer use only car.
If you read the book you'll understand why Eric commented as he did, with modern more viscosity stable oils 10w seems appropriate. I agree with you that wear and summer use only both have an influence on choice though.
« Last Edit: April 18, 2017, 07:41:57 AM by rossocorsa » Logged
lukasdeopalenica
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« Reply #21 on: April 18, 2017, 03:52:14 AM »

As far as I know about lubrication the ideal oil should have stable viscosity at all conditions e.g. temperature, pressure and etc. To be more precise it should have the viscosity of hot oil at cold start let say 15cSt. For our beta engines it should be even slightly "thicker" to maintain proper oil pressure.  Unfortunatelly that products so far does not exist and still remains the "holy graal" for all petrolheads... The best available approximation would be 0W60 for good quality synthetic esters. Regular oils, especially mineral ones have, unfortunatelly, strong temperature related viscosity. This means they are almost not flowing at extreme cold temperatures and on the other hand at running temperatures they become too thin, not maintaning the proper protection against wear.  


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Lancia Beta HPE 2000i.e. '82 rosso corsa
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Neil-yaj396
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1979 1300 Coupe


« Reply #22 on: April 18, 2017, 07:06:11 AM »

Back on topic I had a good hard drive up some fairly demanding roads to the top of the Dales yesterday to collect my daughter from the end of her Gold DofE expedition, so the new fuel pump has had a fair test. However, I hadn't put back the rear valance cover in the boot after messing with the off side light cluster for the MOT. Said cluster had popped off when I opened the boot to deposit rucksacks etc. A good prompt to put it back together properly....
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Neil-yaj396
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1979 1300 Coupe


« Reply #23 on: April 25, 2017, 05:57:39 PM »

500 mile round trip to Bristol at the weekend to return Elena to Uni and take part in Bristol Italian Automoto Festival. Mainly A roads there then all motorways back so a good shakedown for those long drives in Europe come June.


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