Cal Posted 10June, 2016 Report Share Posted 10June, 2016 I'm currently using Shell Helix 25w-60 in my 1600 standard motor, but thinking of a change to Penrite HPR30 20w-60 for convenience (I use it in the 911 motor). Does anyone have an opinion on the subject? Not on Shell vs Penrite, but rather the change in viscosity. Link to comment Share on other sites More sharing options...
Peter M Posted 10June, 2016 Report Share Posted 10June, 2016 Cal,For historic reasons the SAE viscosity grades aren't particularly accurate when actually describing viscosity and you'll find the HPR30 to be a little thicker both hot and cold than Helix 25w-60. However probably not enough for you to notice in practice and the HPR is a better higher spec oil in terms of the ACEA accreditations and will be more readily available than the Helix 25w-60. Give it a go I suggest as being able to buy Penrite in 20 litre drums is an attractive proposition when you are running two cars using the same oil. Have you ever tried 15w-40 in both cars? That's probably what I would be looking at, but I'm not you! Link to comment Share on other sites More sharing options...
Cal Posted 12June, 2016 Author Report Share Posted 12June, 2016 Thanks. Changed it yesterday and we'll see how it goes. Link to comment Share on other sites More sharing options...
Merv Posted 14June, 2016 Report Share Posted 14June, 2016 Go the Penrith 30, highest zinc level of the lot and great for these old motors. Link to comment Share on other sites More sharing options...
Al Posted 31December, 2016 Report Share Posted 31December, 2016 Recommending the new Penrite Classic V-Dub oil. Thread on this oil under the air cooled 911 section. Link to comment Share on other sites More sharing options...
Cars And Coffee Byron Bay Posted 14January, 2017 Report Share Posted 14January, 2017 I use Penrite in the 911, but my 356 came with Valvoline Vr1 racing oil.Suggestions on stick with this or change to Penrite? http://www.valvoline.com.au/explore-our-products/all-products/engine-oil/passenger-car-motor-oil/valvoline-racing-formula-50-engine-oil Link to comment Share on other sites More sharing options...
LeeM Posted 14January, 2017 Report Share Posted 14January, 2017 I've always used Penrite in any car or bike I've owned. Never had any drama's. I have Valvoline in the 911 now, and will be changing to Penrite mineral when I get a full service done. Support Straya'n companies maaaate! Link to comment Share on other sites More sharing options...
Cars And Coffee Byron Bay Posted 14January, 2017 Report Share Posted 14January, 2017 I've always used Penrite in any car or bike I've owned. Never had any drama's. I have Valvoline in the 911 now, and will be changing to Penrite mineral when I get a full service done. Support Straya'n companies maaaate!Switching won't be a problem ? I've read too much about degredation of seals when changin engine types and brands ?? Link to comment Share on other sites More sharing options...
LeeM Posted 14January, 2017 Report Share Posted 14January, 2017 Been reliably told it's fine mate, as long as it's the same weight is used (eg 20w 50 etc) I'd speak to someone that actually knows, and not listen to a shop that is trying to sell their product etc, or a numpty like me Link to comment Share on other sites More sharing options...
Merv Posted 16January, 2017 Report Share Posted 16January, 2017 Don at DHM swears by Liqui-Moly. I got a couple of 10 litre containers from him for the 911. Seems a good product. Staying with the Penrite for the 356 due to its ultra high zinc content. I did also use the (below) self-levelling Penrite grease for the steering box on the 356 as the seals on almost all of them leak if you use regular 80 weight gear oil. Also regular grease just spins away from the meshing parts, where as the Penrite, self-levelling grease stays put and doesn't liquify and run out of the seals. Very impressed with this product.http://www.penriteoil.com.au/products.php?&id_products=90 Link to comment Share on other sites More sharing options...
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